When Mendel crossed true-breeding yellow-seed plants with true-breeding green-seed plants, the offspring were genotypically:
A)yellow seed.
B)green seed.
C)a mixture of yellow and green seed.
D)made up of a combination of yellow and green alleles.

Question

Quizplus · Accepted Answer

When Mendel crossed true-breeding yellow-seed plants (genotype YY) with true-breeding green-seed plants (genotype yy), the offspring were all heterozygous (genotype Yy) for seed color. This means that they received one yellow allele and one green allele, resulting in a combination of yellow and green alleles in their genotype. Therefore, the correct choice is D, "made up of a combination of yellow and green alleles."

When Mendel Crossed True-Breeding Yellow-Seed Plants with True-Breeding Green-Seed Plants