Anury is the absence or abbreviation of the tail in animals, including sheep. It is inherited in an autosomal dominant fashion. A ram with anury is mated to a ewe with a normal tail. The ram's father had anury, his mother did not. What is the probability that the ram and ewe will produce a lamb with anury? (ram = male; ewe = female)
A. No chance
B. 75%
C. 25%
D. 100%
E. 50%
Answer: E
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