Cornelius and Janelle sought genetic counseling because of concern that they might have children with sickle-cell disease. The counselor determined they each have one recessive allele for sickle-cells and one dominant allele for healthy blood cells
The counselor would tell them that they have a
a. 100% chance of having a child with sickle-cell disease.
b. 25% chance of having a child with sickle-cell disease and a 50% chance of having a child with sickle-cell trait.
c. 25% chance of having a child with sickle-cell trait and a 50% chance of having a child with sickle-cell disease.
d. 75% chance of having a child with sickle-cell disease.
b
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