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How many different genotypes are produced in this f2 generation?

a)9
b)16
c)4
d)8

How many different genotypes are produced in this f2 generation? a)9 b)16 c)4 d)8-example-1

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Answer: 9

Explanation: The F2 progeny of Mendel's dihybrid cross exhibit four different phenotypes: round yellow, round green, wrinkled yellow and wrinkled green. There are 9 different genotypes: RRYY, RRYy, RrYY, RrYy - 4 genotypes of the round yellow phenotype.
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