A true-breeding plant producing red flowers i | vedclass

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(D) Let the allele for red flowers be $R$ and the allele for white flowers be $r$. Since red is dominant,the genotype of the red-flowered parent is $R

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(D) Let the allele for red flowers be $R$ and the allele for white flowers be $r$. Since red is dominant,the genotype of the red-flowered parent is $RR$ and the white-flowered parent is $rr$.When these are crossed,the $F_1$ generation plants have the genotype $Rr$ (all red flowers).When $F_1$ plants are selfed $(Rr 	imes Rr)$,the resulting $F_2$ generation genotypes are $RR$,$Rr$,$Rr$,and $rr$ in a $1:2:1$ ratio.The phenotypic ratio is $3$ red-flowered plants to $1$ white-flowered plant.Therefore,the proportion of plants producing white flowers is $1/4$.

$A$ true-breeding plant producing red flowers is crossed with a pure plant producing white flowers. The allele for the red color of the flower is dominant. After selfing the plants of the first filial $(F_1)$ generation,what would be the proportion of plants producing white flowers in the progeny?

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