Dentinogenesis Imperfecta Is a Rare,autosomal,dominantly Inherited Disease of the Teeth

question 34

Multiple Choice

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 their first child will be a girl with dentinogenesis imperfecta?

• A)3/4
• B)1/4
• C)1/2
• D)100%
• E)1/8