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Path: utzoo!watmath!clyde!bonnie!akgua!mcnc!ecsvax!emigh
From: emigh@ecsvax.UUCP (Ted Emigh)
Newsgroups: net.motss,net.bio
Subject: Re: gay genes
Message-ID: <1299@ecsvax.UUCP>
Date: Mon, 20-May-85 10:02:16 EDT
Article-I.D.: ecsvax.1299
Posted: Mon May 20 10:02:16 1985
Date-Received: Wed, 22-May-85 02:13:16 EDT
References: <4086@allegra.UUCP> <1901@ut-sally.UUCP> <452@psivax.UUCP>
Reply-To: emigh@ecsvax.UUCP (Ted Emigh)
Organization: NC State University
Lines: 17
Keywords: Sickle Cell Anemia; Thalassemia Major
Xref: watmath net.motss:1712 net.bio:205
Summary: 

In article <452@psivax.UUCP> friesen@psivax.UUCP (Stanley friesen) writes:
>	Actually, the heterozygote(only one copy) sickle cell
>advantage is restricted to tropical Africa, and it is due to
>immunity to African Sleeping Sickness not malaria.

Actually, the heterozygote sickle cell advantage is to malaria (Plasmodium
falciparum).  While the major occurence of sickle cell anemia gene is in
Central Africa, it is also found in other malarial environments (Persian
Gulf, Central India, etc).  Another abnormality also is associated with
malaria -- Thalassemia major, which occurs in relatively high frequencies
in the Mediterranean countries (also where malaria had a high incidence).

-- 

Ted H. Emigh     Genetics and Statistics, North Carolina State U, Raleigh  NC
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