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Path: utzoo!watmath!clyde!bonnie!akgua!akgub!cylixd!charli
From: charli@cylixd.UUCP (Charli Phillips)
Newsgroups: net.bio
Subject: Re: Re: race specific...
Message-ID: <215@cylixd.UUCP>
Date: Fri, 23-Aug-85 09:28:50 EDT
Article-I.D.: cylixd.215
Posted: Fri Aug 23 09:28:50 1985
Date-Received: Sun, 25-Aug-85 06:20:40 EDT
References: <191@tekig5.UUCP> <314@kitty.UUCP> <678@cybvax0.UUCP> <1858@aecom.UUCP> <192@husky.uucp>
Reply-To: charli@cylixd.UUCP (Charli Phillips)
Organization: RCA Cylix Communications , Memphis, TN
Lines: 14
Summary: 

In article <192@husky.uucp> mj@husky.uucp (Mark A. Johnson) writes:
>
>	Also, is sickle-cell anemia really a defense against malaria?
>	If so, how does it work?  Isn't the cure worse than the disease?
>

Sickle-cell anemia (homozygous for the malformed blood cells) is NOT
beneficial to anyone.  Sickle-cell trait (heterozygous for the malformed
blood cells), however, does provide some protection against malaria.  
Sickle-cell does not follow the dominant-recessive pattern of inheritance
(like albinism or dwarfism.)  Rather, the two alleles are both expressed
in a heterozygous individual (like blood type).  It is the heterozygous
form that is beneficial.