Biology genetics question please help

Posted on 2014-03-28 11:19:00 in Biology by OCEAN

I have two questions to answer for my Biology homework please help! and I don't get how to do it..



Many people from warm regions carry an allele that provides resistance to malaria. Two copies of this allele, however, causes a deadly blood disorder called sickle cell anemia.



1. Suppose two parents are healthy carriers of the sickle-cell allele. The genotype of each parent is AS (A is the normal allele, and S is the sickle-cell allele). How likely is it for a child of these parents to have sickle cell anemia (SS)?



2. Do you think the allele for sickle cell anemia would be common in regions where malaria did not exist? Explain why or why not.

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