The diagram below shows a monohybrid cross. W | vedclass

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(D) In a monohybrid cross for height in pea plants:$1$. $P$ represents the tall parent,which is homozygous dominant $(TT)$.$2$. The $F_1$ generation i

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$TT, Tt, tt$

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(D) In a monohybrid cross for height in pea plants:$1$. $P$ represents the tall parent,which is homozygous dominant $(TT)$.$2$. The $F_1$ generation is produced by crossing $TT$ with $tt$ (dwarf parent),resulting in all tall plants with genotype $Tt$. Thus,$Q$ represents the $F_1$ tall plant with genotype $Tt$.$3$. Selfing the $F_1$ $(Tt 	imes Tt)$ produces the $F_2$ generation with a phenotypic ratio of $3:1$ (tall:dwarf) and a genotypic ratio of $1:2:1$ $(TT:Tt:tt)$.$4$. $R$ represents the dwarf plant in the $F_2$ generation,which must be homozygous recessive $(tt)$.Therefore,the genotypes are $P = TT, Q = Tt, R = tt$.

The diagram below shows a monohybrid cross. What are the genotypes for height in plants $P, Q$,and $R$?

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