Mark the odd one (w.r.t. F_{2} generation of | vedclass

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(D) In a Mendelian dihybrid cross,the $F_{2}$ generation follows a phenotypic ratio of $9:3:3:1$ and a genotypic ratio based on the $1:2:1:2:4:2:1:2:1

Vedclass · Accepted Answer

Frequency of $ttRr$ genotype = $25\;\%$

Vedclass · Answer

(D) In a Mendelian dihybrid cross,the $F_{2}$ generation follows a phenotypic ratio of $9:3:3:1$ and a genotypic ratio based on the $1:2:1:2:4:2:1:2:1$ distribution.Total possible combinations are $16$.$1$. Frequency of $TtRR$ genotype: $2/16 = 1/8 = 12.5\%$.$2$. Frequency of $ttrr$ genotype: $1/16 = 6.25\%$.$3$. Frequency of $TTRR$ genotype: $1/16 = 6.25\%$.$4$. Frequency of $ttRr$ genotype: $2/16 = 1/8 = 12.5\%$.Option $D$ states the frequency of $ttRr$ is $25\%$,which is incorrect as it is $12.5\%$.

Mark the odd one (w.r.t. $F_{2}$ generation of Mendelian dihybrid cross).

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