Question

The genotypic ratio of the monohybrid cross in the F2 generation is _______.

• A. 1 : 2 : 1
• B. 2 : 1 : 1
• C. 1 : 1 : 2
• D. 2 : 2 : 1

Answer 1

The correct option is A 1 : 2 : 1

In the F2 generation of a typical monohybrid cross, we get homozygous and heterozygous combinations. These combinations appear in the following ratio
1(homozygous dominant): 2(heterozygotes):1 (homozygous recessive).
Thus the genotypic ratio of a monohybrid cross is 1:2:1.
Here the phenotypic ratio of 3:1.