First Americans May Have Been Australian
DarthVeda writes "There are some surprising new findings that suggest the first inhabitants of America may have come from down under rather than Siberia. The research is based off of 'distinctive' skulls that predate known Native American skulls. The researchers intend to use extracted DNA to help prove their findings."
to all who think that DNA sequencing is going to solve the debate:
1. The DNA had to be extracted from bone. This is difficult, the DNA may be fragmented leading to incomplete or dubious sequences.
2. One way to look at population genetics is to look at mitochondrial DNA, which is transmitted maternally. All assumptions on dating changes in that DNA depend on assumptions about mutation rates which are increasingly turning out to be incorrect.
3. Another way to do it is to look at repetitive sequences in DNA. Here, the amount of change between population groups is used as a timer for divergence. Turns out that repetitive DNA attracts mutations, again screwing up timing estimates.
Add to this a nice mixture of ethnic pride, scientific pride and plain old human thickheadedness and we have ourselves a nice new long debate that isn't going to be solved anytime soon. Still, I like the idea. It's provocative and might actually help (in the long run) to rid the debate of who was there first of unconstructive emotions.
----- One learns to itch where one can scratch.
Although a song about a sheep=thieving hobo that commits suicide may seem to be appropriate, it's not the Australian national anthem. The correct national anthem is "Advance Australia Fair"... but it's nowhere near as interesting.
-ReK
md5sum -c reality.md5
reality: FAILED
md5sum: WARNING: 1 of 1 computed checksum did NOT match
So why are Americans so touchy on that same matter ? Because the never occupants nearly wiped out the previous ones ? PC sucks.
Non-Linux Penguins ?