In peas,a pure tall plant (TT) is crossed wit | vedclass

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(A) $1$. In the $F_{1}$ generation,the cross between $TT$ and $tt$ results in all heterozygous tall plants $(Tt)$.$2$. When $F_{1}$ plants $(Tt)$ are

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$1: 1$

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(A) $1$. In the $F_{1}$ generation,the cross between $TT$ and $tt$ results in all heterozygous tall plants $(Tt)$.$2$. When $F_{1}$ plants $(Tt)$ are self-pollinated to produce the $F_{2}$ generation,the genotypes obtained are $TT, Tt, Tt,$ and $tt$.$3$. The phenotypic ratio is $3$ tall : $1$ short,but the question asks for the ratio of pure tall $(TT)$ to short $(tt)$ plants.$4$. In the $F_{2}$ generation,the genotype $TT$ appears once and the genotype $tt$ appears once.$5$. Therefore,the ratio of pure tall $(TT)$ to short $(tt)$ plants is $1:1$.

In peas,a pure tall plant $(TT)$ is crossed with a short plant $(tt).$ The ratio of pure tall plants to short plants in $F_{2}$ is

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