Multiple choice

The genotypic ratio of the F2 generation of a monohybrid cross is

  1. 1 : 2

  2. 1 : 3

  3. 1 : 2 : 1

  4. 3 : 1
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In a monohybrid cross (Aa x Aa), the F2 genotypic ratio is 1:2:1 (1 AA : 2 Aa : 1 aa). This represents homozygous dominant, heterozygous, and homozygous recessive genotypes. The phenotypic ratio is 3:1, but the question specifically asks for genotypic ratio.

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