In pea plants,yellow seeds are dominant over | vedclass

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Question

(A) Let the allele for yellow seeds be $Y$ and the allele for green seeds be $y$.Since yellow is dominant over green,the genotype for a heterozygous y

Vedclass · Accepted Answer

$50 : 50$

Vedclass · Answer

(A) Let the allele for yellow seeds be $Y$ and the allele for green seeds be $y$.Since yellow is dominant over green,the genotype for a heterozygous yellow-seeded plant is $Yy$.The genotype for a green-seeded plant is $yy$ (as it is a recessive trait).When we perform a test cross between $Yy$ and $yy$:$Yy 	imes yy ightarrow Yy, Yy, yy, yy$.The resulting offspring are $50\%$ yellow-seeded $(Yy)$ and $50\%$ green-seeded $(yy)$.Therefore,the ratio of yellow to green-seeded plants is $1:1$,which is equivalent to $50:50$.

In pea plants,yellow seeds are dominant over green seeds. If a heterozygous yellow-seeded plant is crossed with a green-seeded plant,what ratio of yellow to green-seeded plants would you expect in the $F_1$ generation?

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