Sickle cell anemia is a disease caused by a recessive allele. what is the chance a child will be a carrier for sickle cell if one parent has it, and the other parent does not, and is homozygous.
a. 50%
b. 100%
c. 75%
d. 25%

A

Explanation:

For a child to be a carrier, one parent must be homozygous dominant and other one must be heterozygous. So that the cross results should show results for two homozygous dominant offspring and two heterozygous offspring