Scientists have analyzed the mitochondrial and Y-chromosomal DNA from a 10,300-year-old human remains found in On Your Knees Cave on
DNA sequencing showed that the individualâ€™s mitochondrial DNA belongs to an ancient subhaplogroup of haplogroup D that was brought to the
Characterization of additional founder haplogroups would disturb past attempts at calculating the dates of founding because these calculations were based upon mutation rates of a limited number of haplogroups. For instance, in this case subhaplogroup D did not need the extra time to mutate from haplogroup D â€“ it merely arrived with haplogroup D. This could significantly shorten the estimated arrival time of founder haplogroups.
The abstract and PDF at American Journal of Physical Anthropology is available here.
The National Geographic summary is available here.
Other articles by Brian Kemp are located at Pubmed.
was â€œNew estimates for the arrival of the earliest Native Americans.â€ Interestingly
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