In the F2 generation of a Mendelian dihybrid cross the number of phenotypes and genotypes are:
a. phenotypes - 4; genotypes - 16
b. phenotypes - 9; genotypes - 4
c. phenotypes - 4; genotypes - 8
d. phenotypes - 4; genotypes - 9

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d. phenotypes - 4; genotypes - 9

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