Re: smallest ANCIENT non-bird dinosaur - was what I was asking

["T. Michael Keesey" <keesey@gmail.com>]

On Thu, May 8, 2008 at 11:07 AM, David Marjanovic
<david.marjanovic@gmx.at> wrote:
>
> ----- Original Message -----
> From: "Adam" <adam@crowlspace.com>
> To: "Dinosaur Mailing List" <dinosaur@usc.edu>
> Subject: Re: smallest ANCIENT non-bird dinosaur - was what I was asking
>
>> I've had interesting reactions when trying to
>> explain how 10% of all the people alive 1,000 years ago became ancestors
>> to everyone alive, and 90% didn't. That kind of shocks people.
>
> Is it even true? Or are you only talking about mitochondria or Y
> chromosomes?

I read in one book that if you go back 1600 (not 1000) years, everyone
from that time who has living descendants is ancestral to everyone
alive today. (I can't recall if there was no reference or if I was too
busy to look it up....)

-- 
T. Michael Keesey
Director of Technology
Exopolis, Inc.
2894 Rowena Avenue Ste. B
Los Angeles, California 90039
http://exopolis.com/
--
http://3lbmonkeybrain.blogspot.com/
http://dragabok.blogspot.com/