In peas, yellow seed color (Y) is dominant to green seed color (y). Which describes an organism that has nonidentical alleles for seed color?

An organism with nonidentical alleles is heterozygous, meaning it has one dominant allele and one recessive allele: Yy. Since Y is dominant over y, a Yy pea plant has yellow seeds. Therefore, the correct choice is B, Yy and has yellow seeds.

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