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Archiver > GENEALOGY-DNA > 2006-10 > 1161009409


From: "Sasson Margaliot" <>
Subject: Re: [DNA] AFC; Dogger; S21
Date: Mon, 16 Oct 2006 16:36:49 +0200
References: <5860498.1160998036152.JavaMail.root@eastrmwml02.mgt.cox.net>
In-Reply-To: <5860498.1160998036152.JavaMail.root@eastrmwml02.mgt.cox.net>


On 10/16/06, <> wrote:

> If it turns out that S21 has a locus in the old homelands of those peoples
> - a thing which has not yet been proven - then it would make sense to look
> for the source of English and lowland Scot S21 among those Migration Period
> immigrants rather than in some remote prehistoric migration that may or may
> not have occurred over a land mass that may or may not have actually
> existed.
>

The same considerations apply in other geographical areas as well.

The present distribution of SNPs reflects mostly recent occupation and
migration history.

DID the early humans first ran all over the globe, (so that each new SNP
takes place in a new country) - and then froze in one micro-area for
thousans and thousands of years?

DOES anybody still believe that?

DID the people stayed in one place for hundreds and hundreds of generations
because they wanted to make the work of genetic genealogists easier?

IN REALITY, the populations expanded and moved around a lot, displaced,
enslaved, and exterminated the others, and from time to time were displaced
or even eliminated by "natural" disasters. It is only in some very rare and
exeptional locations (like Tuvalu Archipelag) that what was a majority
Haplogroup 3000 years ago is still a majority Haplogroup today.

IN ENGLAND, too, the logic of the observed frequency and genetic deversity
levels follows from well known events in historic times.

Some R1b came with Celts, then some R1b and J2 - with Romans, then some more
R1b and I with Anglo-Saxons, and even more R1b and J2 with Normans, etc,
etc. .

The high level of R1b in England is explaned by the fact that all the listed
inviders belong to various sub-brances of "centum" branch of Indo-Europeans
(to which Celtic, Latin, and Germanic languages belong).


Sasson Margaliot

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