Tay-Sachs disease is a recessive genetic disorder. If only one gene is present, an individual is a carrier. What is the probability of two healthy Tay-Sachs carriers having a child that has the disease?
A B C D
0% 25% 50% 75%
Question: Tay-Sachs disease is a recessive genetic disorder. If only one gene is present, an individual is a carrier. What is the probability of two healthy Tay-Sachs carriers having a child that has the disease?
(A) 0%
(B) 25%
(C) 50%
(D) 75%

Answer: (B) 25%
Answer: (C) 50%
Question: Tay-Sachs disease is a recessive genetic disorder. If only one gene is present, an individual is a carrier. What is the probability of two healthy Tay-Sachs carriers having a child that has the disease?
(A) 0%
(B) 25%
(C) 50%
(D) 75%
Answer: (B) 25%