When Mendel crossed true-breeding plants bearing yellow seeds with true-breeding plants bearing green seeds, what was the genotypic ratio among the offspring?

Question

Quizplus · Accepted Answer

Mendel's cross between true-breeding plants with yellow and green seeds represents a cross between homozygous dominant (YY) and homozygous recessive (yy) parents, which produces heterozygous (Yy) offspring. The genotypic ratio among the offspring in this cross is 1:2:1, which means that there is a 25% chance of producing homozygous dominant (YY) individuals, a 50% chance of producing heterozygous (Yy) individuals, and a 25% chance of producing homozygous recessive (yy) individuals. Therefore, the genotypic ratio among the offspring is 100% Aa (Yy) individuals.

When Mendel Crossed True-Breeding Plants Bearing Yellow Seeds with True-Breeding