Question

If the F₁ generation (RrYy) is self-fertilized, what fraction of the F₂ offspring will be round and yellow?

Options

• 3/16

• 1/16

• 9/16

• 1/4

Answer 1

In the F₂ generation from RrYy self-fertilization, the probability of round seeds is 3/4 (R_) and yellow seeds is 3/4 (Y_). The combined probability is 3/4 × 3/4 = 9/16, representing the round yellow class in the 9:3:3:1 ratio.