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(C) In a monohybrid cross,we study the inheritance of a single pair of contrasting traits.According to Mendel's law of segregation,the $F_1$ generatio

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$1:2:1$

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(C) In a monohybrid cross,we study the inheritance of a single pair of contrasting traits.According to Mendel's law of segregation,the $F_1$ generation produces gametes that result in an $F_2$ generation with a phenotypic ratio of $3:1$ (dominant to recessive).However,the genotypic ratio is determined by the combination of alleles: $1$ homozygous dominant $(TT)$,$2$ heterozygous $(Tt)$,and $1$ homozygous recessive $(tt)$.Therefore,the genotypic ratio is $1:2:1$.

The genotypic ratio of a monohybrid cross will be

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