In Mendel's dihybrid cross experiment,how man | vedclass

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(C) In a dihybrid cross,Mendel considered two traits,each controlled by a pair of alleles. For each gene,there are $3$ possible genotypes $(AA, Aa, aa

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$9$

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(C) In a dihybrid cross,Mendel considered two traits,each controlled by a pair of alleles. For each gene,there are $3$ possible genotypes $(AA, Aa, aa)$.Since the two genes assort independently,the total number of genotypes in the $F_2$ generation is calculated by the formula $3^n$,where $n$ is the number of genes.For a dihybrid cross,$n = 2$.Therefore,the number of genotypes = $3^2 = 9$.The $9$ genotypes are: $YYRR, YYRr, YyRR, YyRr, YYrr, Yyrr, yyRR, yyRr, yyrr$.

In Mendel's dihybrid cross experiment,how many types of genotypes are obtained in the $F_2$ generation?

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