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From: dan@wystan.bsd.uchicago.edu
Newsgroups: sci.bio
Subject: Re: Man vs Woman vs Chimp DNA Percentages
Message-ID: <0093D12D.0754D500@wystan.bsd.uchicago.edu>
Date: 22 Sep 90 05:48:10 GMT
References: <1803@anaxagoras.ils.nwu.edu> <68103@lll-winken.LLNL.GOV> <7713@milton.u.washington.edu>,<999@massey.ac.nz>
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Organization: Dept.of Neurology, Univ.of Chicago
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In article <999@massey.ac.nz>, AChamove@massey.ac.nz (A.S. Chamove) writes:
>Over the past few years, there has been a lot of debate on the following
>question: 
>If chimps and humans are so close genetically, then why can we not make
>hybrids?  Of course a lot of people say that we can and could.  Others
>say that there are incompatibilites, but no one I have encountered has
>been able to specify what those incompatibilites are. Can you?
>arnold

	Putting aside chromosome number for a minute . . . .

	What about immunological differences?  I know that the placenta is an 
"immunologically priveledged" site, but there's probably enough differnce 
between human and chimp histocompatability antigens to cause some sort of 
rejection response to the fetus.  Sort of an Rh reaction from hell.

--

						Dan Rohwer-Nutter
						dan@wystan.bsd.uchicago.edu