[thechat] Journey of Man
Pauline Caldwell
diotima at btopenworld.com
Wed Feb 5 00:03:01 CST 2003
On Wednesday, February 5, 2003, at 03:23 , Erika Meyer wrote:
> The DNA thing patterns are where I get confused also... but anyway,
> he's tracking patterns on the y chromosome. Women don't have a y
> chromosome. He says that men give their y chromosome to their sons
> in a relatively intact state. So that enables him to track patterns
> on the y chromosome.
>
>
There's mitochondrial DNA, it's only passed on by the mother. There was
a BBC Television Horizon programme on super-volcanoes, broadcast a
couple of weeks ago, that described the technique of tracking
mitochondrial DNA as a means of estimating global population just after
the Toba eruption, 74,000 years ago.
http://www.google.com/search?hl=en&safe=off&q=Bottleneck+and+%22Mitochondrial+
DNA%22
Pauline
Pauline's Views of France: http://www.cubica.co.uk/pauline/
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