Both parents carry one recessive gene for sickle cell anemia, but they do not have sickle cell anemia themselves. What is the chance that their child could have sickle cell anemia?
A)one chance in two
B)one chance in three
C)one chance in four
D)no chance (zero out of four)

Question

Quizplus · Accepted Answer

When both parents carry one recessive gene for sickle cell anemia, there is a 25% (one chance in four) probability that their child will inherit the recessive gene from both parents and have sickle cell anemia.

Both Parents Carry One Recessive Gene for Sickle Cell Anemia