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From: drew@ukma.UUCP (Andrew Lawson)
Newsgroups: net.bio
Subject: Re: Re: race specific...
Message-ID: <2080@ukma.UUCP>
Date: Fri, 23-Aug-85 13:10:24 EDT
Article-I.D.: ukma.2080
Posted: Fri Aug 23 13:10:24 1985
Date-Received: Sun, 25-Aug-85 00:09:52 EDT
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Reply-To: drew@ukma.UUCP (Andrew Lawson)
Organization: Univ. of KY Mathematical Sciences
Lines: 15

>	Also, is sickle-cell anemia really a defense against malaria?

As I understand it, sickel-cell is a mixed dominance genetic trait.
  1) Those without sickel-cell at all are at higher risk from malaria.
  2) Those who are have both allels for sickel-cell tend, in primitive
     cultures, to die from the anemia.
  3) Those with one allel for sickel cell have the benefit of malaria
     resistance (or reduced severity) with some "normal" blood cells.

-- 
Drew Lawson

Disclaimer:
  No disclaimer is needed as the entire universe exists only in
my mind. (I think, therefor I think.)