A homozygous dominant parent for yellow seeds is crossed with a homozygous recessive parent for green seeds. The Punnett square shows the possible genotypes of the offspring.Which color are the seeds of the offspring?

Let Y represent the dominant allele for yellow seeds and y the recessive allele for green seeds. The cross is YY × yy, so every offspring inherits Y from one parent and y from the other, giving genotype Yy. Since yellow is dominant, all the offspring have yellow seeds.

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