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What is the most common genetic abnormally?

Steven B. Harris sbharris at ix.netcom.com
Sun Jun 15 15:51:49 EST 1997

In <33A367BC.4B7E at sprynet.com.ns> Elliot Williams
<kakapo at sprynet.com.ns> writes: 
>What is the most common genetic abnormally?
>Is hemochromatosis (iron overload) the most common genetic
>Heterozygous (single gene) 1 in 8
>Homozygous (double gene) 1 in 200
>(source: http://www.emi.net/~iron_iod/io42000.html).
>What are the other common genetic abnormalities?
>E. Williams
>kakapo at sprynet.com

   About 1 in 20 carries the gene for cystic fibrosis, with the
homozygous frequency being about 1 in 4*(20)^2 = 1600.  Of course, the
frequency of these things varies with the population.

                          Steve Harris, M.D. 

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