In beans, the black color of the seed coat dominates over the white. When a black seed plant was pollinated with pollen

In beans, the black color of the seed coat dominates over the white. When a black seed plant was pollinated with pollen from a white seed plant, half of the plants with black seeds and half with white seeds were obtained. What are the genotypes of the parent plants?

Let’s designate the dominant gene, which causes the black color of seeds, by the letter “A”, then the recessive gene, which causes the development of seeds, colored white, will be “a”.

White-seeded plants – aa, because homozygosity is a condition under which a recessive trait acquires the ability to be realized in a phenotype. This kind of genotype is possible in the offspring of individuals carrying at least one recessive gene, therefore, the parent plants with black seeds are Aa.

Answer: aa and Аa.