Probability of genotype TTrr in F_{2}-generat | vedclass

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(A) In a dihybrid cross involving two traits (e.g.,height $T/t$ and seed shape $R/r$),the $F_{2}$ generation is produced by selfing the $F_{1}$ dihybr

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$\frac{1}{16}$

Vedclass · Answer

(A) In a dihybrid cross involving two traits (e.g.,height $T/t$ and seed shape $R/r$),the $F_{2}$ generation is produced by selfing the $F_{1}$ dihybrid $(TtRr 	imes TtRr)$.According to the law of independent assortment,the probability of each allele combination can be calculated independently.The probability of genotype $TT$ is $\frac{1}{4}$ and the probability of genotype $rr$ is $\frac{1}{4}$.Therefore,the probability of the combined genotype $TTrr$ is $\frac{1}{4} 	imes \frac{1}{4} = \frac{1}{16}$.

Probability of genotype $TTrr$ in $F_{2}$-generation of a dihybrid cross is

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