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 two children will have dentinogenesis imperfecta?

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


Answer: B

Biology & Microbiology

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There are over 11,500 species of these protists that have ornate, glass-like shells.

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