Question 18
A mating of two organisms produces a 1:2:1 ratio of phenotypes in the progeny. The parental genotypes, and the mode of
inheritance are most likely:
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a Aa x aa, A is dominant to a
b Aa x Aa, incomplete dominance or codominance
c AA x aa, incomplete dominance or codominance
d Aa x Aa, X-linked, A is dominant to a
e Aa x Aa, A is dominant to a