Re: Nature 431, 518 - 519 (30 September 2004); doi:10.1038/431518a

From: G Horvat (g-horvat_at_shaw.ca)
Date: 10/07/04 

Date: Thu, 07 Oct 2004 22:53:18 GMT

On 7 Oct 2004 18:00:48 GMT, Philip Deitiker <Nopdeitik@att.net.Spam>
wrote:

>That is the basis of pairwise analysis. And when you talk
>about a mtDNA population of a few years back with lots of
>eurasian sequences and very few african or austronesian
>sequences, one tends to get a pairwise analysis that is
>recent.
> My base assumption is that all migration based expansions
>are by definition assymetric, and therefore generally a serial
>aspect of some gene/population process. So as and expansion
>occurs the general aspect of the population gives rise to a
>stereotypical character, for example DQB1 0402 in the seri is
>at 42%, in the highest frequency eurasian, the ainu, it is 8%
>in the next highest frequency region, europe its at 1%. What
>that basically means that of the europeans that left to the
>east that particular subset have 8 fold more than the normal
>population, which is expected, because the whole population is
>not going to migrate at the same time, then again in asia it
>happens again. Between these you can have drift or selection
>act.

How do you know the 1% frequency in Europe is not due to admixture?

Gisele