Question

For a dihybrid cross, the number of squares is 16 in a Punnett square of F2 generation.

(a) True

(b) False

This question was addressed to me in an interview for internship.

My query is from Inheritance of Two Genes-2 topic in division Principles of Inheritance and Variation of Biology – Class 12

Answer 1

Correct answer is (a) True

To explain: For a dihybrid cross, four types of gametes are produced by the heterozygotic generation. This gives rise to 4*4=16 combinations. Hence 16 squares are required in the Punnett square.