Re: Possible interbreeding of HS and preexisting populations
- From: "johnwl4@xxxxxxx" <johnwl4@xxxxxxx>
- Date: 25 Aug 2006 07:58:06 -0700
johnwl4@xxxxxxx wrote:
johnwl4@xxxxxxx wrote:
Gisele Horvat very kindly provided a couple of URL's which might
be of interest to some here. Here is one:
http://mbe.oxfordjournals.org/cgi/content/full/22/2/189
The other is a pdf which I will post if anyone cares to look at it.
John GW
Here is the URL for the pdf:
http://email.eva.mpg.de/~paabo/pdf1/Kaessmann_DNASeqNatGen.pdf
John GW
I'll add a couple of further comments on these papers. See
"Scientific American"
November and December, 2003 - The Unseen GEnome. Some of the
non-coding sections of the nuclear DNA are transcribed into RNA which
is used directly rather than coding for a protein molecule which the
cell uses. This means that these sections could affect survival and
be subject to selection. Whether that applies to the above article, I
don't know.
Let me give an example. Some of these sections, riboswitches, may
affect the synthesis of amino acids. Well, humans cannot synthesize 8
of the amino acids, and babies cannot synthesize histidine. These 8
are found in meat which implies, I would suppose, that humans have had
meat in their diets for a long time. But clearly this affects
survival when mankind switched to agriculture.
So - the question is, are there any non-coding genes in the
section of DNA studied in the two articles cited?
John GW
.
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