Question

A cross between pure tall and pure short pea plants gives hybrid tall pea plants in the first generation. What would be the genotypic ratio in the offspring of the second generation if these F1 plants were self-pollinated?

(a) 3:1

(b) 9:3:3:1

(c) 1:2:1

(d) 1:1

Answer 1

Correct answer is (c) 1:2:1

Explanation: A cross between pure tall and pure short pea plants gives hybrid tall pea plants in the first generation. The genotypic ratio in the offspring of the second generation if these F₁ plants were self-pollinated would be 1:2:1.