Slashdot Mirror


Familial DNA Testing Nabs Alleged Serial Killer

cremeglace writes "A quarter-century of conventional detective work failed to track down the killer responsible for the deaths of at least 10 young women in south Los Angeles dating back to the mid-1980s. But a discarded piece of pizza and a relatively new method of DNA testing has finally cracked the case, police announced last week. On July 7, L.A. police arrested Lonnie Franklin Jr., 57, a former garage attendant and sanitation worker they suspect is the serial killer nicknamed the 'Grim Sleeper.' The key evidence? A match between crime-scene DNA and the suspect's son, obtained by a search through the state's data bank of DNA collected from 1.3 million convicted felons."

48 of 258 comments (clear)

  1. Re:Why don't they find the serial killer gene inst by tisepti · · Score: 5, Funny

    Nope - cant do it.

    If we start removing the genes for sociopathy we will not have anyone left to be the CEO of the fortune 500 companies.

  2. Re:Why don't they find the serial killer gene inst by mangu · · Score: 2, Interesting

    It makes more sense to me to find the gene that produces serial killers and cure it while it's in the fetus stage

    There has been some theoretical discussions about this idea before, but the general idea is not very popular right now.

  3. Re:Why don't they find the serial killer gene inst by Anonymous Coward · · Score: 4, Interesting

    Why don't they find the serial killer gene instead

    It's on the list. Right after curing cancer.

  4. There are starving kids in china by coolsnowmen · · Score: 5, Funny

    The moral of the story is: finish your damn pizza.

    1. Re:There are starving kids in china by dlanod · · Score: 2, Interesting

      It's the usual "DNA testing helped us catch this serial killer. Obviously this means it's all safe and dandy and no privacy worries here!" article that gets wheeled out about once every couple of months, just in case someone was starting to have concerned thoughts about all that identifying material being available to the government and its underlings.

      I'm rather sceptical about these articles these days because they do seem to appear so regularly to remind us all how lucky we are. Keep an eye out and you'll see what I mean.

    2. Re:There are starving kids in china by Svippy · · Score: 2, Insightful

      Before long we're going to need complete isolation suits before we can commit a crime.

      Surely you are more clever than that. Everyone knows that as the equipment of law enforcement become more and more sophisticated, the trick is not to circumvent them, but to exploit them. What if you made some careful plants of other people's DNA? What would the robot do? Frame someone!

      Hell, you could even make a double-bluff and plant extraordinary evidence of yourself there, that law enforcement would think, 'oh, it can't possibly be him, he's not that clumsy; he must have been framed!'. The options are endless!

      --
      Clicked pie.
  5. Familial Testing Was ONLY Part 1 by MarkvW · · Score: 4, Informative

    Familial testing gave them the ballpark family.

    Regular policework found the bad guy from there. They stalked the suspect, who was nabbed after DNA was found on a meal that the suspect discarded. THAT DNA was the stuff that got him busted.

    1. Re:Familial Testing Was ONLY Part 1 by Anonymous Coward · · Score: 5, Funny

      Moral of the story: Eat the crust.

    2. Re:Familial Testing Was ONLY Part 1 by Pharmboy · · Score: 3, Funny

      Reminds me of the string of murders in a city nearby. They found all the victims strangled in their own bathtubs, covered in milk and Cheerios with a whole banana shoved into their throats. The police are pretty sure that it is a cereal killer.

      [rimshot]
      Thanks folks! I'll be here all week! Try the fish!

      --
      Tequila: It's not just for breakfast anymore!
    3. Re:Familial Testing Was ONLY Part 1 by jd · · Score: 4, Interesting

      Oh, but you can. There's over 100 mutations in the genome per generation, so between any two siblings there's up to 200 differences. A complete genome decode would therefore certainly allow you to identify an individual. However, the police don't use genome decodes. They use much cruder methods of comparing individuals which will produce a fair number of false positives. Having said that, if you think you have privacy concerns now, wait until the police DO start using full genome decodes. And sooner or later they will. It's inevitable. Higher-grade intelligence, plus extra goodies like knowing what chemicals you might be sensitive to, is bound to eventually become too tempting. The technology will need to be cheaper and quicker, but that's just a matter of time.

      I'm also expecting this kind of DNA work to be coupled with more sophisticated chemical analysis. If, as has been claimed, you can identify where a person has been by the chemical traces in their body, then some samples (such as blood) will likely contain those same traces. Once it becomes cost-effective and time-effective to extract that kind of extra information, it seems certain that it will become routine.

      (It is unclear just how far you can go back, or with what level of detail, as far as geographic chemical tracing goes, but as some chemicals accumulate whereas others have a definite half-life in the body, it would make sense to say that geographical tracing has the potential to get fairly complex with time.)

      There may well be other sources of information that have yet to be discovered or for which there are no tests (or at least, none that are well-known). For example, if there's a blood sample, it will likely contain red blood cells and may even contain trapped air molecules. That may tell you a little about the air quality at the time, placing additional constraints on both time and place of origin. No idea if it would be all that useful or cost-effective, but that's largely immaterial in comparison to the fact that clearly it is possible to imagine that further tests could exist. Once you know they can exist, you know that sooner-or-later they will exist.

      (I'd be rather happier if there was a little more in the way of community policing versus some of the current practices, and if justice was a little more about balancing crime prevention via therapy and rehabilitation against the apparent need in society for revenge and retribution. It seems to me that if the criminal justice system had less reasons to be hostile, there would be less inclination to abuse that system from within. There will always be a lunatic fringe, but the smaller it is, the safer it will be to have such technology where it needs to be.)

      --
      It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
  6. Re:Why don't they find the serial killer gene inst by MozeeToby · · Score: 2, Interesting

    Well, there is precedent

    The punishment involved the execution of close and extended family members.[3][20] These included:

            The criminal's living parents
            The criminal's living grandparents
            Any children the criminal may have, over a certain age (which is usually variable depending on the time period)
            Any grandchildren the criminal may have, over a certain age (which is usually variable depending on the time period)
            Siblings and siblings-in-law (the siblings of the criminal and that of his or her spouse, in the case where he or she is married)
            Uncles of the criminal, as well as their spouses
            The criminal himself

    Of course, for a complete wipe you'd want to get nieces and nephews too, a group strangely absent from the list of executed.

  7. Data mining gone wrong. by TheTurtlesMoves · · Score: 5, Interesting

    DNA fingerprints are not as random as many think. The markers used were not designed for a nation wide database situation. Hence collisions could be a big problem. That is two people with the same fingerprint (at least at the very small parts of DNA we look at) can in fact be very likely with a database this size.

    I'm not saying he is innocent, but i don't think we should jump to the conclusion that he is guilty either.

    In fact we may need to use SNPs (Single nucleotide polymorphisms) to be good enough for a database of millions (or eventually billions) to reduce collisions to acceptable levels.

    --
    The Grey Goo disaster happened 3 billion years ago. This rock is covered in self replicating machines!
    1. Re:Data mining gone wrong. by westlake · · Score: 4, Insightful

      DNA fingerprints are not as random as many think. The markers used were not designed for a nation wide database situation. Hence collisions could be a big problem. That is two people with the same fingerprint (at least at the very small parts of DNA we look at) can in fact be very likely with a database this size.

      The collision is a problem only if both are plausible suspects:

      The Korean War vet in a California hospice is almost certainly not the serial rapist and killer who has been stalking women in New Jersey the past six months.
       

    2. Re:Data mining gone wrong. by sehlat · · Score: 4, Insightful

      When you're talking about evidence where the death penalty is at issue, the ONLY acceptable collision rate is zero.

    3. Re:Data mining gone wrong. by witherstaff · · Score: 4, Interesting

      The feds and states have been working hard to ensure there are no known collision rates above zero by prohibiting searches of the database to see just how bad it is. The LA Times has a nice writeup about the problem. Basically they don't want scientists doing blind studies because it shows DNA isn't absolute especially for cases that have no other evidence.

    4. Re:Data mining gone wrong. by simtel · · Score: 3, Funny

      You should try telling that to the TSA.

    5. Re:Data mining gone wrong. by Rich0 · · Score: 4, Insightful

      From a purely utilitarian point of view, executing anybody who is likely to consume more than they produce over the remainder of their life is a net-positive for society. That is almost exactly the definition of fascism.

      I'm sorry, if some guy goes out and kills somebody, I can't do anything about that but try to catch him. However, if I support a law that lets my government kill innocent people as long as it is likely that they'll have a net savings of life then I'm the one with blood on my hands.

      I'm not even really a big opponent of the death penalty. However, clearly it can't be applied in a utilitarian way.

    6. Re:Data mining gone wrong. by wurp · · Score: 3, Informative

      From a purely utilitarian point of view, executing anybody who is likely to consume more than they produce over the remainder of their life is a net-positive for society.

      I don't think that's true at all. You can treat a human life as something with inherent value, greater than the value of anything else, and use utilitarian ethics to examine life and death issues.

      Why is there blood on your hands if you support a law that lets a government employee kill an innocent, and not blood on your hands when you support a law that lets a criminal kill an innocent?

      I know our gut tells us that when we act and it results in death it's worse than when we fail to act and it results in death, but I think our gut's wrong.

      For more interesting variations, see http://en.wikipedia.org/wiki/Trolley_problem

    7. Re:Data mining gone wrong. by treeves · · Score: 2, Interesting

      I know our gut tells us that when we act and it results in death it's worse than when we fail to act and it results in death, but I think our gut's wrong.

      Such a position is very problematic. For instance, it makes the CEO of a drug company that fails to manufacture and distribute a malaria drug (say for profit-related reasons) worse than Stalin or Hitler, by virtue of more people dying as a result his inaction.
      And how do you decide who's guilty in a case of non-action, since clearly if someone dies as a result of inaction, everyone in the world didn't act. Are they all guilty? Obviously, you would say "the person who was capable of acting" which may narrow it way down, but again, how would you decide it? What if any number of actions could have prevented the death. How do you ensure you have uncovered them all?
      You probably didn't mean to frame your assertion so broadly, but you did.

      --
      ...the future crusty old bastards are already drinking the Kool-Aid.
    8. Re:Data mining gone wrong. by wurp · · Score: 2, Interesting

      Which of your examples do you think demonstrates a flaw in my assertion? Obviously people (including me) are not built to act from the heart on the ethical stance I'm talking about, but I see no reason someone in the position to easily stamp out malaria, but who chooses not to do so purely for reason of profit, is any less responsible for those deaths than if he killed them himself.

      Of course, once you start discussing real world examples of that kind of situation, things get much more complicated: the CEO could argue that if he did such a thing, his company would fail and more lives would be lost from the company's future failure to act than would be lost from the current failure to act. And of course as soon as the argument becomes muddy like that, our natural self-interest bias kicks in and we convince ourselves that the course of action that best serves us is the most moral.

      I am (to some degree) responsible for the deaths of people I've never met because I choose to buy a new car rather than buy an old one and donate the difference to, e.g., programs to provide clean water in Africa. I think there is some reasonable balance between living your life to do the most moral good and living your life to indulge yourself, but I don't think many people come close to the former. I know I don't, but I can face up to that rather than purport myself to be a good person when I know I am not.

      I make irrational decisions regarding my willingness to "be good". Until I see a convincing argument to the contrary, though, I will continue to believe my decisions to be irrational rather than throw logic aside just because I can't bring myself to buck society and live according to the logic.

      Of course, we are not built to be moral. We are built to breed and survive.

    9. Re:Data mining gone wrong. by goodmanj · · Score: 4, Insightful

      Yes, but often the defendant and *his brother* are both potential suspects.

      This actually came up in a case I served on a jury for. The defense argued that the *other* brother could well have committed the crime, and given the poor quality of DNA evidence, we couldn't disprove that beyond a reasonable doubt.

      DNA collision among close-knit racial groups is worth thinking about; collision within families is a serious problem.

  8. Re:Why don't they find the serial killer gene inst by elucido · · Score: 2, Interesting

    It makes more sense to me to find the gene that produces serial killers and cure it while it's in the fetus stage

    There has been some theoretical discussions about this idea before, but the general idea is not very popular right now.

    None of the ideas which would actually work are popular. Doing anything to save the environment isn't popular. Doing anything about population growth is not popular.

    But if we decide which ideas are good or bad based on whats popular this would explain why we are dying. I mean if we decide it's a good idea to continue giving birth to serial killers, and mentally retarded children when we could decide to have perfectly healthy children, sure it might not be a popular idea but it's still right.

    Can anyone give me one reason why giving birth to disabled children is a good idea? Especially if we are talking about serial killers? From a utilitarian perspective, if given the option to have a child who is healthy or a child that is going to be a serial killer I'd choose the healthy child.

  9. Re:I said serial killers not sociopaths. by copponex · · Score: 4, Insightful

    Most of the sociopaths running fortune 500 companies aren't serial killers, or rapists.

    True, but that wouldn't stop them from hiring that work out if it were profitable, and if they thought they could get away with it. The main difference between a criminal and a business genius is that one understands more intricately the phrase "plausible deniability."

  10. Because the family members are victims already. by elucido · · Score: 2, Interesting

    If you had a serial killer in your family that makes you into a victim just by the fact that you have a serial killer in your family. It ruins your family reputation and dishonors your family be default.

    No I don't think killing the families of serial killers would work because you cannot kill a bad gene. The only thing you can do about a bad gene which probably exists in most families, is to allow most families to have the option to give birth to offspring without having that gene activate itself. Also it's more ethical from a utilitarian perspective to spare human lives as taking lives makes and creates misery in the same way that the serial killer does.

    My solution is logical because it would work and it would make the world happier and safer. Your solution is less logical because it wouldn't work and it would make the world miserable and more dangerous. When you shut off a gene in a fetus the fetus isn't harmed, nobody has to die. When you kill an entire family then a lot of people have to die.

    So let me guess, you are anti abortion because you believe killing a fetus generates as much misery and damage as killing an adult?

  11. Re:Why don't they find the serial killer gene inst by TheTurtlesMoves · · Score: 4, Insightful

    Biology, despite the movies, really doesn't work that way. You may find a gene... that gives them a 4% chance of being a serial killer, perhaps. Maybe. We think. But there is a good chance you won't find anything at all. Its not all in the DNA (epigenetics, nurture vs nature etc.)

    --
    The Grey Goo disaster happened 3 billion years ago. This rock is covered in self replicating machines!
  12. Re:Why don't they find the serial killer gene inst by ewieling · · Score: 4, Insightful

    Because they will start "curing" homosexuality, skin color, or whatever happens to be unpopular at the moment.

    --
    I really shouldn't have used someone else's email address for this account.
  13. Re:Psychiatric genetics by Mashiki · · Score: 3, Insightful

    I'm sure my GF would disagree with the "trivial and simple", after she started hemorrhaging and nearly bled to death.

    --
    Om, nomnomnom...
  14. This would be great except.... by Anonymous Coward · · Score: 5, Informative

    Familial searches from a DNA database the size of the one in California are very, very likely to produce false positives. For example, a study of the Arizona CODIS database carried out in 2005 showed that approximately 1 in every 228 profiles in the database matched another profile in the database at nine or more loci, that approximately 1 in every 1,489 profiles matched at 10 loci, 1 in 16,374 profiles matched at 11 loci, and 1 in 32,747 matched at 12 loci. http://www.maa.org/devlin/devlin_10_06.html

    With California currently having the third largest DNA database in the world, the odds of ANY new genetic evidence matching on a cold search is way too likely.

    1. Re:This would be great except.... by AK+Marc · · Score: 2, Informative

      They said they had 200 familial matches. They then did investigative work on that to bring the number down, then tested the male Y chromosomes of the matches to see if any matched the Y found at the crime scene. There was one and only one final match. So a two-factor familial test had a zero false positive rate (first markers, plus extra Y testing). Yes, the initial run did get lots of matches, but they tested one and only one person as a result, and he was a 100% match.

  15. Re:Why don't they find the serial killer gene inst by DragonWriter · · Score: 3, Insightful

    Why don't they find the serial killer gene instead

    Because their probably isn't one.

    There may well be genes that impact the propensity to become a serial killer, but, even if there are, its not at all inconceivable that one that slightly increases the propensity to be a serial killer also has all kinds of socially beneficial effects, too, and that which effects manifest in any particular person vary based on environmental, rather than genetic, circumstances.

  16. Re:Why don't they find the serial killer gene inst by future+assassin · · Score: 2, Insightful

    Better yet why not just inject come sheep dna into humans so that we can all follow the sheep leader with out any questioning.

    --
    by TheSpoom (715771) Uncaring Linux user here. I have nothing to add to this but please continue. *munches popcorn*
  17. Re:Only thats not really true. by Eudial · · Score: 3, Insightful

    The leap from "we have found certain genes that affected certain traits" to "it is possible to find a gene that makes a person a serial killer" is quite big. Furthermore, will that gene make everyone who has it a serial killer? What if it's partly genetics, partly environmental? Should we treat people with the gene who have not killed anyone as criminals?

    --
    GAAH! MY PRINTER IS ON FIRE!!! PUT IT OUT! PUT IT OUT!
  18. reminds me of a csi episode by circletimessquare · · Score: 4, Interesting

    they had a guy four square for a brutal rape, but the guy was unconcerned. sure enough, the dna test came back and turned out he only shared half the dna with the culprit: the murderer must be the guy's brother

    so they let him loose and track down brother after brother, sample his dna, and it turns out to be yet another brother. meanwhile, the woman who was raped is murdered, and they find a hair on her body that matches the original suspect's dna 100%

    while examining the original suspect again, grissom sees that his skin is strangely mottled, and he has an interesting statue in his house: the legendary greek chimera

    grissom cracks the case: the guy committed the rape because he knew he was a genetic chimera. the dna of his semen was the "brother" of the dna of his blood

    http://www.csifiles.com/reviews/miami/bloodlines.shtml

    a genetic chimera is an extremely rare individual in which fraternal twin zygotes are created, then fuse. so different organ lines in the body are from two different "individuals". you are your own twin, you are a mix of two people. there is also the real life case of a woman who became a criminal suspect because she was suspected of kidnapping: she claimed to be the mother of a child, but a genetic test reveals she was the aunt: her own ovaries weren't hers but from her "phantom sister"

    http://abcnews.go.com/Primetime/story?id=2315693&page=1

    not that this is an argument against how they caught the grim sleeper, i applaud this use of genetic profiling of relatives to solve crimes. its simple sleuthwork, and plenty of innocent people come under suspicion all the time in criminal investigations that must be ruled out with basic detective work

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
    1. Re:reminds me of a csi episode by PCM2 · · Score: 5, Funny

      the murderer must be the guy's brother

      so they let him loose and track down brother after brother, sample his dna, and it turns out to be yet another brother.

      Typical. Always try to pin it on a brother.

      --
      Breakfast served all day!
  19. Re:Why don't they find the serial killer gene inst by c6gunner · · Score: 4, Insightful

    It's stupid because it makes a baseless assumption about the nature of a specific type of human behavior, uses that assumption to propose an extremely complex solution, and ignores the multitude of side-effects which would most likely occur even if the initial premise were valid and a solution were found.

    It's like saying "hey, why are we wasting money on kevlar vests when we could just cure the bullet-permeability gene?"

  20. Re:Why don't they find the serial killer gene inst by Anonymous Coward · · Score: 4, Insightful

    Now thats the ticket, and why stop there?

    We could also shut off the gene that makes us eat to much junk food. We could shut off the gene that makes people like Brittaney Spears. Finally, I would love it if we could shut off the gene that makes people annoying and unable to understand that some things in life are complicated and not black and white.

  21. Re:I said serial killers not sociopaths. by Jurily · · Score: 4, Funny

    The main difference between a criminal and a business genius is that one got caught.

  22. Re:Why don't they find the serial killer gene inst by DragonWriter · · Score: 3, Informative

    If we find the one gene or series of genes which cause the disease, why not shut those genes off?

    I direct you to my response to GP (well, with the "their/there" error corrected):

    Why don't they find the serial killer gene instead?

    Because there probably isn't one.

    What is the social benefit of serial killing rapists?

    I never said there was a social benefit of becoming a serial killer of any kind; I said that (because links between genes and behavior are rarely simple) its quite likely that if there is a gene or set of genes that increases the overall likelihood of someone with it becoming a serial killer, the same gene or set of genes could quite possibly also have other effects, which are socially beneficial. Whether in any particular person the undesirable effects, the desirable effects, both, or neither manifest could be (as is often the case) determined not by the genetics alone but the genetics combined with environmental triggers.

  23. Re:Why don't they find the serial killer gene inst by SupremoMan · · Score: 2, Insightful

    Caution: This slope you're on... it's a slippery one.

  24. Re:Why don't they find the serial killer gene inst by Quiet_Desperation · · Score: 3, Interesting

    Cripes, that sounds like my crazy elderly dad. He thinks they should kill a murderer's family (you know, the people who *didn't* do the crime) in front of him. I keep explaining to him that serial killers are sociopaths who won't *care* if you kill their family (or even get off on it), but no go.

  25. Re:Why don't they find the serial killer gene inst by compro01 · · Score: 3, Insightful

    So based on the fact we can cure certain forms of immunodeficiency, blindness, deafness, and colourblindness, you conclude that there is/are (a) genes that controls whether someone will become a serial killer and can be altered without substantial side effects?

    That's one hell of an unfounded leap. All of those conditions have known mechanisms of action (we know exactly what doesn't work properly) and have found the gene(s) is/are responsible for them. We have neither for serial killers/violent offenders, and I highly doubt there is any gene or set of genes that gives any reasonable probability of one becoming a serial killer or violent offender.

    Even if there is a genetic root, current evidence shows it is massively correlated to environmental conditions. Here in Canada, a large percentage of dangerous offenders (criminals with long, violent histories serving indeterminate sentences) have Fetal Alcohol Spectrum Disorder.

    --
    upon the advice of my lawyer, i have no sig at this time
  26. Re:Why don't they find the serial killer gene inst by RsG · · Score: 4, Informative

    Either we're not speaking the same language, or you're not listening. Or you're REALLY confused, and honestly think that serial killers all suffer from down syndrome. Regardless, judging by your inability to stay on the topic which you yourself started, I doubt that we can have a productive discussion.

    He is, insofar as I can understand, stating that both down syndrome and psychopathy are genetic, and that as we can detect and prevent the former, so too should we be able to detect and prevent the latter. And I'm in agreement with you that this stance is an incorrect one, though likely for different reasons.

    My personal qualm with is not an ethical one, but a practical one. I sincerely doubt that the propensity for being a serial killer can be linked to a single gene, and I'm not even sure it can be described as genetic. Put simply, I do not think we will ever be able to screen for and prevent such traits.

    The comparison to down syndrome is fundamentally incorrect, as down syndrome is entirely determined by a minor mutation on the gamete cell before conception leading to chromosomal trisomy. Meaning it's entirely caused by genetic, and not environmental, factors. Even if there is a genetic complex shared by all serial killers (which there is no evidence to suggest that I am aware of), it is likely that environmental factors in the killer-to-be's upbringing play a bigger role.

    --
    Erotic is when you use a feather. Exotic is when you use the whole chicken.
  27. Re:Only thats not really true. by RsG · · Score: 4, Informative

    Give me one reason why we shouldn't let parents guarantee the health of their child through fetal screening?

    Were it possible, I would agree with you. It isn't. And isn't likely to be in the future either.

    Look, your argument seems to be that:
    A) Serial killers possess a common mental illness.
    B) This illness is genetic (as in, 100% genetic with no other factors, like down syndrome)
    C) Prenatal screening will one day be able to test for this illness, allowing a serial killer to be aborted or fixed in utero.

    Is this correct? Have I got your argument right?

    Now, the problem with this is B. Serial killers likely do share a common, rare mental illness. There is no evidence that it is genetic. In point of fact, most mental illnesses aren't genetic to begin with, as they're non-selective traits.

    Illnesses like down syndrome are the exception, not the rule. Down syndrome is 100% genetic, without fail. Autism (to use an example you yourself brought up) is more typical; we've known about it for decades now, studied it extensively, and still don't know for sure what causes it. It's likely a constellation of factors, possibly including more than one distinct diagnosis based on causes that we aren't yet equipped to identify.

    In other words, and if you take nothing else from my post please, please understand this, it is very likely that no serial killer gene or genes exist. You cannot screen for genetic factors in a non-genetic illness.

    --
    Erotic is when you use a feather. Exotic is when you use the whole chicken.
  28. Re:Why don't they find the serial killer gene inst by flyingsquid · · Score: 3, Interesting
    see: http://www.npr.org/templates/story/story.php?storyId=127888976

    Really interesting story about a neuroscientist who studies the links between genes, neurobiology, and crime. He's always argued that genes determine behavior: serial killers are killers because of their genes and their brain structure. But one day, at the family barbecue, he learns that his family tree is full of violent criminals and killers, including the infamous axe-murderess Lizzy Borden. So as an experiment, he decides to do genetic testing and brain scans on his family. His mother, his siblings, his kids: all normal. No abnormal genes. No unusual brain activity. Except for *one* family member, one person who was tested and who has both the abnormal genes and abnormal brain activity linked with sociopathic behavior. The person? It's the researcher himself.

    So, assuming the dude doesn't have a freezer full of dead hookers we haven't found out about, that would seem to argue that it's a little simplistic to argue that a gene or genes automatically turn you into a serial killer. Studies of mental disorders have long shown that these things are complicated. If you have an identical twin who's schizophrenic, odds are pretty good that you're going to be schizophrenic- but it's not even close to 100% of the time, it's more like 50%.

    Let's look at this practically, though. Say that you find out your mother, your father, your brother, or your sister has a gene that is linked with sociopathic behavior. Should they be locked up or prevented from reproducing? What if a routine screening discovered that you had that gene?

  29. Re:Why don't they find the serial killer gene inst by Anonymous Coward · · Score: 2, Insightful

    fix my multiple sclerosis first!
    and cancer, and parkinsons, and all the other diseases with known genetic contributing factors

    just go back to watching AMW and keep your ass firmly planted on the couch, stay out of the way
    csi isn't real, and the statistics used for these genetic databases can be debunked with some simple court room demonstrations

  30. Re:Most disconcerting. by AK+Marc · · Score: 2, Interesting

    If you don't want to have your DNA taken, then don't give it to anyone else. That includes progeny. Otherwise, anyone sampling your progeny's DNA will be able to get a guess as to yours. Though in this case, my understanding is that they had his DNA from a crime scene, but not on file. The partial hit got them to narrow down the search to a specific family, where they identified the most likely offender and tested him for a direct match.

    So he left his DNA at a crime scene, then left it on some trash after the police had been following him. So as long as you don't leave your DNA at a crime scene, you won't have to worry. And as long as you don't raise armed robbers who get in the system for a match to you, you won't have to worry.

    But in answer to your question, your son will be 50% your DNA (and 100% of his Y will be yours, and 100% of his mitochondrial DNA will be his mother's) so there will always be trackers in the case of children. Keeping your DNA under wraps includes not procreating.

  31. Re:Why don't they find the serial killer gene inst by PPH · · Score: 3, Interesting

    Because their probably isn't one.

    Or there is, but epigenetics plays a role in turning the gene on. So the gene may be present in a large part of the population (good luck filtering it out), but its not expressed in most of the carriers.

    Its also possible that, even though this gene is turned on by some environmental condition, its continued expression can be handed down through several generations. So now, we's have to weed out those with the gene plus those exposed to the environmental switch. Plus descendants for several generations. Label someone as a risk because of what their grandfather did? Good luck with that.

    --
    Have gnu, will travel.
  32. Re:Psychiatric genetics by Pikoro · · Score: 2, Funny

    3) His signature contributed to the moderation.

    For those who have them turned off, here is the complete post:

    I'm sure my GF would disagree with the "trivial and simple", after she started hemorrhaging and nearly bled to death.

    --
    Om, nomnomnom...

    --
    "Freedom in the USA is not the ability to do what you want. It is the ability to stop others from doing what THEY want"