20. A cross is performed between parents with genotypes xxYyZz and xxYyzz. What is the probability that the offspring will have the same genotype as the first parent? Capital letters indicate dominant alleles and lower case letters indicate recessive alleles.
(A) 1/8
(B) 1/4
(C) 3/8
(D) 3/16
(E) 9/16

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統計: A(0), B(1), C(0), D(0), E(0) #3061392

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