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The brave new era of human genetic testing (2008)
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[QUOTE]Originally posted by xyyman: [QB] You are starting to sound like the faggy Ric on Davdski....Capra. We are going in circles. As a reminder, I don't argue hypotheticals. Try again! [QUOTE]Originally posted by capra: [qb] no, that does not make sense. but congratulations for the baby steps toward employing logic. a long time ago there was only the root haplotype of R0a. in some, but not all, lines of descent one or more additional mutations occurred in the HVS-I. after 18 000 years or so any given line of descent will have an average of 1 HVS-I mutation (some will have none, some more than one). the older the haplogroup the smaller the proportion of the root haplotype will remain in modern descendants. estimated age of R0a is 20-25 000 years (not that i'd take that too seriously), the root haplotype and 1 step haplotypes are still very common. okay so look at R0a2c. what is the most common kind of R0a2c? the root haplotype of R0a2c. if some R0a2c migrated from Asia into Africa, what kind would be most likely to migrate? the most common kind of course, which is the root haplotype. you need to think about what it actually means, not work with vague ideas of "upstream" and "downstream" that you don't understand. now what if it originated in Africa. then what, all the R0a2c women who had a mutation in HVS-I just happened to migrate to Asia, leaving the root haplotype only there? no, that is nonsense. (but it could be that it is just a matter of luck in this small sample, that other branches of R0a2c do exist in Africa but they happened not to be found in this sample.) [/qb][/QUOTE] [/QB][/QUOTE]
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