Archiver > GENEALOGY-DNA > 2012-02 > 1329373564

From: Sam Sloan <>
Subject: Re: [DNA] Out of Africa
Date: Wed, 15 Feb 2012 22:26:04 -0800
References: <><><010a01ccec5d$996c5870$cc450950$@org><070701ccec70$10c10800$32431800$@net>
In-Reply-To: <070701ccec70$10c10800$32431800$@net>

What seems often to be overlooked is the difference between male and
female generations.

In modern, historic times a male generation lasts 30 years, a female
generation lasts 23 years. 23 years is the age of peak fertility among
females today.

In prehistoric evolutionary times these ages must have been much
lower. I would guess about 23 years for males and 17-18 for females.
The females obviously started getting pregnant not long after they
reached puberty and also did not live as long as modern females do.

So, all these calculations need to be redone.

Sam Sloan

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