Sickle-cell disease is an inherited chronic blood disease caused by an autosomal recessive allele.Suppose a man with sickle-cell disease fathers a child by a woman who is a carrier for sickle-cell disease.What are the chances their children will exhibit the disease?

Question

Quizplus · Accepted Answer

The man with sickle-cell disease has two recessive alleles (ss), and the carrier woman has one recessive allele and one normal allele (Ss). Their children have a 50% chance of inheriting two recessive alleles (ss) and thus exhibiting the disease.

Sickle-Cell Disease Is an Inherited Chronic Blood Disease Caused by an Autosomal