Sickle-cell disease is an inherited chronic blood disease caused by an autosomal recessive allele. Suppose a man with si

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Sickle-cell disease is an inherited chronic blood disease causedby an autosomal recessive allele. Suppose a man with sickle-celldisease fathers a child by a woman who is a carrier for sickle-celldisease. What are the chances their children will exhibit thedisease?
0 percent
25 percent
50 percent
75 percent