can u please help me answer this question and also please write so i can underst

Question

can u please help me answer this question and also please write so i can understand

2) Dentinogenesis imperfecta is a rare, autosomal, dominantly inherited disease of the teeth that occurs in about one in 8000 people (Witkop 1957). The teeth are somewhat brown in color, and the crowns wear down rapidly. Assume that a male with dentinogenesis imperfecta and no family history of the disease marries a woman with normal teeth. What is the probability that (a) their first child will have dentinogenesis imperfecta? (b) their first two children will have dentinogenesis imperfecta? (c) their first child will be a girl with dentinogenesis imperfecta?

Explanation / Answer

Answer:

2. a. Since the disease is dominant and heterozygous, the probability that a child will get the disease is 1/2.

b. 1/2 x 1/2 = 1/4

Whether one child gets the disease is independent of whether another child has the disease, so the probabilities are multiplied.

c. 1/2 x 1/2 = 1/4

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