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

From: Philip Deitiker (Donevenask_at_worlnet.att.net)
Date: 10/08/04 

Date: Fri, 08 Oct 2004 01:50:14 GMT

G Horvat <g-horvat@shaw.ca> says in
news:5thbm0pcvqifqpg6b5vr7uqtqju9tn96b1@4ax.com:

> 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?

It is absent in SE asia pretty much the only other place in the
world it can be found is in the !kung. That !kung mexico Ainu
europe route that appears to be so popular amoung stone age
travelers, heh-heh. 

-- 
Philip
- - - - - - - - - - - - - - - - - - - - - - - - - - - 
Mol. Anth. Group    http://groups.yahoo.com/group/DNAanthro/
Mol. Evol. Hominids http://home.att.net/~DNAPaleoAnth/
Evol. of Xchrom.    
http://home.att.net/~DNAPaleoAnth/xlinked.htm
Pal. Anth. Group    http://groups.yahoo.com/group/Paleoanthro/
Sci. Arch. Aux      
http://groups.yahoo.com/group/sciarchauxilliary/