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Glowing Fish are First Genetically Engineered Pets

securitas writes "It was bound to happen. Texas-based biotechnology company Yorktown Technologies will start selling a 'genetically engineered aquarium fish that glows in the dark.' The trademarked GloFish -- 'a tropical zebra fish infused with the gene of a sea anemone that makes it glow fluorescent red' -- is first genetically engineered pet. The possible consequences of introducing a new trangenic species into the environment has touched off a debate that has critics such as the National Academies of Science and the Center for Food Safety calling for a ban on the sale of the fish unless the FDA regulates and approves it. The fish go on sale in January 2004. You can see photos of the GloFish here. Cool, but it's no Blinky." M : I think these guys are marketing the fish for a Taiwanese company.

51 of 361 comments (clear)

  1. Bummer by Durin_Deathless · · Score: 5, Funny

    From their FAQ:
    What if a fluorescent zebra fish is eaten? Eating a fluorescent zebra fish is the same as eating any other zebra fish. Their fluorescence is derived from a naturally occurring gene and is completely safe for the environment. Just as eating a blue fish would not turn a predator blue, eating a fluorescent fish would not make a predator fluoresce.

    Bummer, I was hoping to see fluorescent cats!

    --
    You should use AdiumX on your Mac.
    1. Re:Bummer by I+Be+Hatin' · · Score: 2, Interesting
      Bummer, I was hoping to see fluorescent cats!

      You have seen the Fluorescent bunny haven't you? Its fluorescence doesn't come from eating a fluorescent fish, though. It was genetically modified to expressed GFP.

      --
      I know god exists. I read it on the internet, so it must be true.
    2. Re:Bummer by Daniel+Dvorkin · · Score: 4, Funny

      We breed fluorescent mice at my work. Cute little critters, have no idea that they glow. But they probably do wonder why people are always picking them up and sticking them under funny-colored lights and making "ooh, aah" noises. ;)

      --
      The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
    3. Re:Bummer by filtur · · Score: 2, Funny

      New application for spam: Enlarge your penis! And make it glow! The lightsaber you always wanted!

  2. A Real Challenge by crass751 · · Score: 5, Funny
    Now if only someone could genetically engineer a fish that didn't die within a week.

    I've had about 5 fish, only one of them lived longer than a week.

    1. Re:A Real Challenge by richy+freeway · · Score: 5, Funny

      Or genetically modify people to look after fish better. :P

    2. Re:A Real Challenge by Klowner · · Score: 2, Informative

      Actually I'm pretty sure these "Zebra Fish" are actually Zebra Danios, at least they appear to be zebra danios..

      I have 3 zebra danios, and considering how little I actually clean my aquarium, they are extremely resilient little fish. I'm talking on-par with goldfish as far as hardiness. There is also a long-fin variety of danios that are quite pretty, I'd like to see some glow in the dark long finned ones.

      Anyway, my point is, any idiot that can keep half-way decent water in a tank, should be able to keep these little guys happy :)

      Klowner

  3. Ultimate Case Mod by herulach · · Score: 5, Funny

    With a few of these and one of these you'd have a way cool case.

    Who needs cold cathodes?

  4. Novelty Item by KD5YPT · · Score: 5, Insightful

    You know, this has gone too far. Genetic engineering just for the heck of it? What purpose do a glowing fish have?

    --
    In US, you can easily buy enough major firearms to wipe out your neighbourhood but a few little fireworks are banned.
    1. Re:Novelty Item by Richard_L_James · · Score: 5, Funny

      What purpose do a glowing fish have? 1) No need to install lights in fish tanks/ponds 2) Makes nightime fishing easier 3) You can actually see your food during the candle lit dinner with your girlfriend.... :-)

    2. Re:Novelty Item by Morgahastu · · Score: 4, Insightful

      The lessons learned in engineering a new breed of fish can be used in the future to say, engineer cancer fighting genes.

      This is just a side effect of a useful experiment, why not make some money from it and raise awareness for genetic engineering?

    3. Re:Novelty Item by Daniel+Dvorkin · · Score: 5, Informative

      Yep. Grandparent is a troll, but his question is common enough that it's worth answering.

      Genetic engineering is hard work. Just as mechanical engineers build prototypes to test their ideas before going into full-scale production, so do genetic engineers (and, actually, every other type of engineer I can think of.) As I mentioned in another post, we breed glowing mice at my work; it took about five years of basic research and another three years of trial and error to get a strain of true-breeding* GFP** mice.

      Are these mice useful for anything in themselves? Well, actually, they are; it turns out the GFP gene is a useful marker for other genes that don't express quite so dramatically. But that really wasn't the point. The point was to learn how to implant certain genes -- say, genes that are a risk factor for certain kinds of cancer, or genes for resistance to AIDS, or genes to produce useful drugs -- in a true-breeding strain of mice. Now that technology is understood, and it can usefully be applied to all the examples I gave and many more.

      No one gets upset when Ford builds a concept car, for God's sake.

      ---
      * True-breeding means that the children of parents with these characteristics will reliably have the characteristics themselves.

      ** Green Fluorescent Protein. IIRC, originally found in jellyfish.

      --
      The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
    4. Re:Novelty Item by papasui · · Score: 4, Informative

      From glofish.com:

      Where do fluorescent zebra fish come from?

      Fluorescent zebra fish were specially bred to help detect environmental pollutants. By adding a natural fluorescence gene to the fish, scientists are able to quickly and easily determine when our waterways are contaminated. The first step in developing these pollution detecting fish was to create fish that would be fluorescent all the time. It was only recently that scientists realized the public's interest in sharing the benefits of this research. We call this the GloFish (TM) fluorescent fish.


    5. Re:Novelty Item by xerxesVII · · Score: 2, Funny

      Yes, but the Ford concept car will not go out in the wild and breed with other cars, producing unknown results.

      Obviously, you don't know much about cars.

      --
      "We shall grapple with the ineffable, and see if we may not eff it after all." - Douglas Adams
    6. Re:Novelty Item by swv3752 · · Score: 2, Informative

      Well, just to play Devil's Advocate:

      Here in SW Florida, we have a big problem with Australian Paper trees. They look like a Birch sorta with this peeling thin paper like bark. While they are a hayfever hazard, the worse is what they do the environment. They suck all the water out of the water tables.

      Even worse, when you chop dow n the trees, they release thier seeds. So you need to poison the trees first, then wait a week to chop them down.

      There is a big tree problem in SWF, and it is a slow expensive process to get rid of them. You see, noone realized the problem untill after it was well established.

      --
      Just a Tuna in the Sea of Life
  5. Thinking about he food chain.... by Richard_L_James · · Score: 3, Funny

    Glowing Fish are First Genetically Engineered Pets

    I bet cats will indirectly become the second ;-)

  6. Old news by StrawberryFrog · · Score: 5, Informative

    This is old news. These may be other glowing fish, as they are from Taiwan, but you can get the details
    Here or here

    --

    My Karma: ran over your Dogma
    StrawberryFrog

  7. Honolulu technique by Anonymous Coward · · Score: 5, Interesting

    This sounds a lot like what happened here at the Univeristy of Hawaii. They cloned mice and threw in a little jellyfish in the process to make the mice flourescent. "Four of the mice are fluorescent; they glow green under black light. The glow comes from modified gene protein from jellyfish, which "is a quick demonstration that they are transgenic," said researcher Istefo Moisyadi."

    http://starbulletin.com/2001/02/06/news/story11. ht ml

  8. red eh? by DaBjork · · Score: 3, Funny

    Couldn't they have chosen a better color than red? I just have this image of a kid curled up in bed at night, unable to sleep staring at this ominous red glowing fish all night.

  9. GloFish not as cool as Dopefish by Gathers · · Score: 2, Funny

    GloFish, eh? I think I'll wait for Dopefish to be available as pet.

  10. Illiad saw it coming! by DaneelGiskard · · Score: 3, Interesting

    Look here (and following cartoons :))

  11. Wrong. by Chess_the_cat · · Score: 4, Insightful
    The trademarked GloFish...is first genetically engineered pet[sic]

    The methods used may be different but just about every breed of dog known to Man has been 'genetically engineered.' For example, I have a Boston Terrier. The Boston was created in 1857 as a dog fighter by breeding English Bulldogs and English Terriers. Therefore, the Boston was engineered. Take any dog and you'll find that someone wanted a dog that could do this or that or was such a size so they went about selecting different existing species and breeding them to create their perfect dog. So many people think that genetic engineering is done with test tubes but any time two species are brought together artificially you are engineering genetics. Mendel was a genetic engineer and he lived in the 1100s.

    --
    Support the First Amendment. Read at -1
    1. Re:Wrong. by onthefenceman · · Score: 2, Informative

      Did you mean Gregor Mendel (1822-1884)?

      Furthermore, Mendel worked primarily with traits of pea plants, which clearly could intermingle in nature. The same is true with dogs - I think if you look around you will find they are not terribly particular about who, when, or where they, ur, cross-breed with.

      I think that the questions most people have about altering DNA stem (pun intended) from the fact that humans are creating results that could never occur in nature.

      --
      Have you seen my stapler?
    2. Re:Wrong. by Albanach · · Score: 2, Insightful
      they went about selecting different existing species and breeding them to create their perfect dog.

      Really? That'd be a neat trick. If you are successful in breeding different species you get infertile offspring - that's what species are, different groups that don't crossbreed to produce fertile offspring. Like crossing a donkey and a horse to make a (normally infertile) mule.

      Now taking two different breeds of dogs (which are both from the same species) and crossbreeding is a type of artificial selection, but that's nothing at all like taking parts of two different species and combining them into a new one.

    3. Re:Wrong. by dgp · · Score: 5, Informative

      You make a good point but I believe the title refers to the fact that this is a "transgenic" engineering. That is a different ballpark that cross-breeding.

      From m-w.com:
      transgenic - Having chromosomes into which one or more heterologous genes have been incorporated either artificially or naturally

      heterologous - derived from a different species

      The article says: "a tropical zebra fish infused with the gene of a sea anemone that makes it glow fluorescent red." Im no fish expert but i dont think you can breed fish with sea anemones.

      For your analogy to work, you would have to say something like english bulldogs received genes from a silk spider and now has silky smooth dog turds and can walk up walls.

  12. Not "glow-in-the-dark" by Corgha · · Score: 4, Funny

    I'm a little disappointed. These aren't bioluminescent-type glow-in-the-dark fish like the ones that live in the deep sea. They're fluorescent glow-in-the-UV fish like the ones that live in the rave.

  13. Why we make glowing animals by corvi42 · · Score: 5, Informative

    My girlfriend is a molecular biologist who worked for a time in a lab where they made glowing animals like this ( mostly worms, but they had some rats also ). The reason, scientifically, for making these creatures is not just for the sake of seeing if you can make them glow. Rather, if you attach the genes for the glowing proteins adjacent to the genes for some other protein you'd like to monitor in the animal's DNA, then the glowing protein will become attached to the target protein, and you can get a snapshot of how active that protein is in the organism by simply turning on a UV light. This is a very useful tool for seeing how a particular gene is expressed in the active biology of the organism, because you can watch where, when and how the proteins which that gene codes for are expressed, and in what cells. The glowing pets is just some creepy Frankensteinian commercial spin-off of this research tool.

    --

    There are a thousand forms of subversion, but few can equal the convenience and immediacy of a cream pie -Noel Godin
  14. What I find most apalling... by physicsboy500 · · Score: 2, Insightful

    It's relly to bad that some won't have a single geneticly altered item without rasing havoc. We have been altering plants for centuries by cross breeding. This results in a new type of plant that the changed genes are not controlled. I find that far more disturbing than changing one gene that has a known effect on an organism.

    I realise that there will be things that are genetically altered for the worse. They will either be an experiment or from the mind of someone who intends to do wrong. this is where the line should be drawn... for those who intend to do harm with genetics. Otherwise it is intended for the betterment of society.

    All of the stories you've heard about the genetically altered badities - the Hulk, the tenage mutant ninja turtles, the monkey with 4 asses... are just that, stories. Until the haze of negativity is lifted from genetics we can only make small steps, like making fish glow.

    --
    The original generic sig.
  15. Evil Fish! by cyclist1200 · · Score: 2, Funny

    We all know that these genetically engineered glowing fish are evil!

  16. Anchovies by Treacle+Treatment · · Score: 2, Funny

    I want glow-in-the-dark anchovies so I can watch LOTR in the dark and still eat pizza!

    --
    TT
  17. These DO NOT glow in the dark by banks · · Score: 4, Informative
    There seems to be this weird misconception going on here....


    These "GloFish" DO NOT glow in the dark. They fluoresce red under a black light (UV radiation, for those of us who care). But from everything I've read, they don't emit any light at all in the absence of external UV. None. So, that pretty much makes them "Glow-in-the-LIGHT fish."


    Now, I'm not entirely suprised that the NYTimes doesn't understand that difference, but slashdotters should be able to.

    --
    --Use this space for notes--
    1. Re:These DO NOT glow in the dark by musingmelpomene · · Score: 2, Funny

      Well, I wonder about the effect of this on the fish. It wouldn't be terribly good for humans to have focused, intense UV rays pumped at us all day. Are these fish going to become horrible mutant fish?

  18. Not wrong by KalvinB · · Score: 2, Insightful

    There's a difference between breeding which requires two animals that can naturally have sex with each other to mix genes naturally...

    (Two people of a different race having children isn't genetic engineering.)

    And genetic engineering which completely removes the neccessity for having two creatures have sex to mix the genes. The entire process is dependent on human intervention.

    The former is natural selection. The latter is intelligent design.

    This fish was given genes from a species it could never naturally mate with. Dogs were mated with other dogs they could naturally mate with.

    Ben

  19. Cancer-fighting Fish! by Myrmidon · · Score: 2, Interesting
    These fish may be new to the pet trade, but they have been used for years by biologists to study growth and development. Fluorescent zebrafish are excellent experimental subjects, because:
    • They breed like wildfire and are easy to raise in large numbers. (Imagine a big, big wall of fishtanks.)
    • Their embryos are a convenient size and are completely transparent - you can see every organ in their bodies.
    • You can watch the embryos continuously under the microscope for hours, or even days, at a time. (This is not true of, say, mouse embryos, which tend to become very unhappy once they are removed from the mother mouse.)
    Of course, the fish used for science usually aren't designed to glow all over their bodies, all the time. That's fun for pets, but not very interesting. What scientists do is:
    1. Find some protein that they think is important, like growth hormone.
    2. Find the gene for that protein. For human genes, you can do the equivalent of a Google search through the entire human genome. If you want the equivalent gene in zebrafish, you can take advantage of the zebrafish genome archives. There are also complete genomes for mice, Drosophila (fruit flies) and other creatures that are popular with scientists.
    3. Make a copy of the promoter for your interesting gene. (Genes, like email messages, are controlled by their headers. In genetics these headers are called "promoters". Basically, when the promoter gets activated, the cell starts to transcribe the gene and begins to produce the protein which the gene encodes.)
    4. Attach your copied promoter to the gene for a fluorescent protein (the most popular protein is Green Fluorescent Protein, known as GFP - but there are red, cyan and yellow ones as well.)
    5. Insert your new promoter+gene into an egg cell and grow a creature. Breed it a lot. Inbreed its offspring a lot until you have an extended family of genetically engineered creatures.
    Now you have a creature which glows green or red only in the cells which are producing growth hormone. There are now dozens of strains of fish like this, each with a different promoter controlling the glow. And there are dozens of strains of mice as well.

    My lab uses transgenic, fluorescent mice to study how blood vessels grow. We are trying to learn how to prevent blood vessels from growing into tumors...

  20. I can assure the world by Glowing+Fish · · Score: 4, Funny

    I can assure the world that I am Mostly Harmless.

    --
    Hopefully I didn't put any [] around my words.
  21. Cabbits by rlp · · Score: 2, Funny

    Personally, I'm waiting for cabbits. But only the ones that transform into either spacecraft or mechas.

    --
    [Insert pithy quote here]
  22. Will shit glow in the dark by SoVi3t · · Score: 3, Funny

    If you eat the fish, and go to the washroom, will it glow in the dark? Cuz I'm pretty sure that would be somewhat spooky to leave there in the dark :)

    --
    Defender of Microsoft and Communism!!!
    1. Re:Will shit glow in the dark by in7ane · · Score: 3, Funny

      I think the better question to get answered is what happens if one of those see through fish eat the glowing fish?

      What if it's a glowing see through fish as well...

      I guess what I want to know is what are the chances of getting see through glowing shit?

  23. Re:Voodoo Antiscience by Haeleth · · Score: 2, Informative

    can someone please tell me what the FDA has to do with it? It's just more anti-GM paranoia.

    The antis are worried about what might happen when these fish are released into the wild, as inevitably happens to a fair proportion of any pet species. You may not be going to eat the things, but predators are. And you might end up eating one of the predators. Hence the FDA connection.

    It's paranoia, perhaps, but it's a question that's worth asking nonetheless. If the sellers can convince the authorities that the fish are safe, then the paranoid are left without a leg to stand on. Why don't you want this to happen? I don't for a moment believe that you're secretly worried that they'll turn out not to be safe, so what is your reason for not wanting anyone to certify that they are?

  24. The mindless anti-GM zelots really piss me off by wowbagger · · Score: 2, Insightful
    The mindless anti-GM zelots who protest every GM creature without good reason really piss me off. No matter the organism, no matter the modification, they are against it - not because they have a real REASON or anything, but because "It's GM, it must be bad!"

    I am not saying "all GM is good, let's go" - quite the contrary:
    • I am against BT-enhanced corn - not because it may kill butterflies, but because it guarantees that a perfectly good insecticide will be rendered USELESS in a few years. Rather than making a BT based spray, and using it ONLY in cases of severe infestation, and then making sure you KILL ALL THE BUGS, it will now be used everywhere, no matter what, but at a level that will allow the naturally resistant bugs to live, breed, and dominate!
    • I am against the various Monsanto "self-destructing" breeds of wheat, because that just is one more way in which farming is converted from a relatively self-sufficient and sustainable activity into an activity dependant upon the corporations to survive. Instead of farmers being able to get next year's seed from this year's harvest, they have to go back to Monsanto every year. Improve wheat all you want, guys, but the same arguments RMS makes about software apply to crops - cost to create high, cost to replicate LOW, so GPL them (or at least Aladdin license them!) In twenty years when Monsanto's patents on those strains expire, will you see Monsanto create a strain without the self-destruct gene, or will Monsanto just let the parent stocks die?
    • Worry about introducing a new lifeform into a biosphere forigen to it - but the cain toad has done more damage than this fish ever will, and the cain toad wasn't gene-tweaked! Being gene-tweaked is not sufficent nor necessary cause to be damaging to an ecosystem!


    The mindless anti-GM zelots can prevent things that really help - I would love to see a GM crop that fixed nitrogen like a legume, yielded lots of bio-desiel and plastic precursors, and could be grown year after year in brackish soil, concentrating the salt in the stalks - imagine the boost to the environment and the boost to the third world farmer! But you can bet that, even if an RMS-inspired botanist created such a crop and released it free of charge (think George Washington Carver), the mindless anti-GMers would prevent it from seeing the light of day!

    In short, BE worried about things, but have a clearly reasoned, well thought through idea of WHY you are worried - not just because the thing has "scary" words in it like "genetically modified", "nuclear", or "diesel"!
    1. Re:The mindless anti-GM zelots really piss me off by moof1138 · · Score: 2, Insightful

      "But you can bet that, even if an RMS-inspired botanist created such a crop and released it free of charge (think George Washington Carver), the mindless anti-GMers would prevent it from seeing the light of day!"

      I think you attribute far too much power to the 'anti-GMers'. Here in the US the 'mindless anti-GMers' (all twelve of them) have essentially been powerless to do anything. At this point in time in the US corporate interests trump any others, and Monsanto has been given a free pass to do whatever they please, no matter what the consequences. Consider that in the US it is *illegal* to state that your products do not contain GM products. The anti-GMers have some sway in Europe and elsewhere, but even there you will find that often they are not the mindless straw men you have drawn at all, but have very good reasons for criticism, such as those you yourself have enumerated. Anti-GM usually means anti-Monsanto, and frankly Monsanto can behave completely horribly. Their filing of hundreds of frivolous suits against farmers who refuse to use their products, their propaganda/disinfomation campaigns like the 'golde rice' BS, and many other abuses come to mind. If we ever reach the day where GM is not propagated by corporate predators with a big portfolio of patented life forms, and a bigger army of lawyers, I expect the tone from the anti-GM people might change, but we are not in that world now.

      --

      Hyperbole is the worst thing ever.
  25. These fish are sterlized... by musingmelpomene · · Score: 2, Informative

    And it's probably a good thing for the people who created them that they are. Danios (these fish are more correctly referred to as "zebra danios") are incredibly easy to breed, and if they weren't sterile, you'd see them at Wal-Mart for twenty-seven cents plus tax soon. However, I've never seen this sort of thing before - fish are all pretty "open source" and breeders are pretty much allowed to do as they please with them. I can't help but thinking that excessive use of forced copyright (via sterilization), like this, could easily put fish breeders out of business.

  26. It sure beats the old method by vidnet · · Score: 2, Informative
    It sure beats the old method of injecting fish with a dye.

    Much better for the individual fish.

  27. Re:Not dogs: Zebra fish + sea anemone != offspring by Hatta · · Score: 2, Interesting

    That operational definition of species isn't without its problems though. Some north american squirrels have a wide distribution across the continent, and they can all interbreed with their neighbors. However if you take one from the extreme north and the extreme south of their distribution they cannot mate. Furthermore there are "ring species", species with a ring shaped distribution. Some of these species have been introduced at one point on the ring, and spread around until they meet on the other side. Funny thing is, in some cases these animals cannot interbreed with the other arm of the ring distribution, but they can still exchange genes by going all the way around the ring. My memory is a little foggy, or I'd have better examples, but I got all of this from the book "Patterns and Processes of Vertebrate Evolution" which was the subject of a Slashdot review.
    I highly recommend it. Any university library should have it, if not I'm sure your local bookstore would be happy to order it.

    --
    Give me Classic Slashdot or give me death!
  28. Happy fish have baby fish by jhines · · Score: 5, Interesting

    Zebra fish are difficult, but not impossible for the hobbyist to breed, what happens then?

    Since the fish is covered by patent, what happens to the next generations? Are aquarists going to fall into the same trap as farmers, where they can't replant patented products?

  29. We need an open-source glowing fish!! by dapyx · · Score: 2, Interesting
    from the site:

    Because fluorescent fish are unique, their sale is covered by a substantial number of patents and pending patent applications.

    The production of fluorescent fish by any other party, or the sale of any fluorescent fish not originally distributed by 5-D Tropical or Segrest Farms, is strictly prohibited.


    Who wants to join my GNU/Fish project ?
    --
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  30. As seen on SouthPark by LibrePensador · · Score: 2, Insightful

    Maybe it would be better if we stopped toying with nature. Maybe we should leave the four-assed monkeys schematics alone and let nature take its course...

    I am dead serious, by the way.

    --
    Pragmatism as an ideology is not particularly pragmatic in the long term. Keep it in mind when you dismiss Free Software
  31. Need fish with luciferase enzymes by hungryfrog · · Score: 3, Interesting

    Yes, bummer indeed. When I first saw this post I thought they had created transgenic fish with luciferase, the enzyme that makes fireflies glow. Scientists have been inserting that into all sorts of critters recently for legitimate bioassay purposes. This BBC page has a number of exambles of both flourescent (using jellyfish proteins like these fish) and truly glow-in-the-dark critters.

  32. Hold the presses! 5 month old news! by RALE007 · · Score: 2, Informative

    Uhm, it wasn't a company in Texas that made the breakthrough, it was a company in Taiwan, and they did it 5 months ago. I recall reading an article about it on the BBC.

    --
    Beware blue cats moving at .99c
  33. Biology by SEE · · Score: 2, Interesting

    A small nitpick regarding your terminology: two organisms that are able to breed to produce offspring are by definition the same species.

    Incorrect. There are breeds of dog that cannot safely interbreed, yet they are all considered the same species. On the other hand, cross-species breeding can happen -- horses and donkeys, lions and tigers, and several "jungle" cats with domestic cats can, even sometimes producing fertile offspring.

    (And that, of course, doesn't even consider the vast numbers of asexually reproducing species that such a definition couldn't even possibly apply to, or things like goat-sheep and quail-chick tetragametic chimeras.)

    A species is whatever the current biological consensus calls a species. Factors like if crossbreeds occur naturally or normally produce fertile offspring for sexually reproducing species are taken into account, but a hard-and-fast definition does not and cannot exist.

  34. Re:Mod parent up by swv3752 · · Score: 2, Informative

    Trans-species gene proliferation does happen in nature but is rather rare. A trans-species virus can carry an existing gene from one species, infect another species, and end up leaving the gene in the second species. If the gene is implanted in zygotes, then it will be transmitted onto offspring. This is effectively what we do in the lab for genetiv engineering.

    --
    Just a Tuna in the Sea of Life