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From: "Ken Nordtvedt" <>
Subject: Re: [DNA] Some thoughts about Y-DNA "extinction"
Date: Fri, 1 Jun 2007 07:42:40 -0600
References: <546517.98557.qm@web38803.mail.mud.yahoo.com><465FE5D0.9000409@ucl.ac.uk><a81622ac0706010508r77b78368if847ecf46226ebe9@mail.gmail.com>


----- Original Message -----
From: "Joe Knapp" <>

> Interesting that in a stable population (lambda=1), extinction is
> inevitable.

But after 270 generations (my estimated age from I1a's branching off the I
tree to its founder) the extinction rate is only 0.9892 under constant zero
growth conditions.


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