Question

What traits of pea seed colour did Mendel observe in the $F_2$ offspring on crossing true-breeding yellow-seeded and true-breeding green-seeded parent plants?

• A. Only green seeds
• B. Only yellow seeds
• C. 1 (yellow seed) : 1 (green seed)
• D. 1 (green seeds) : 3 (yellow seeds)

Answer 1

The correct option is D 1 (green seeds) : 3 (yellow seeds)

Mating of true-breeding individuals was performed as hybridisation experiments by Mendel. The plants that are used in the parental generation are called parental generation plants. The seeds produced by the cross of gametes from the parental generation produce the first hybrid plants called the first filial progeny or $F_1$ generation. 100% of $F_1$ generation expresses the trait of one of the parents in a monohybrid cross. Self-pollination of the plant of the $F_1$ generation produces plants of the $F_2$ generation. $F_2$ generation shows the presence of both the contrasting traits in the phenotype corresponding to ratio of 1:3 in a monohybrid cross.