Question

The number of different genotypes observed in the $F_2$-generation o f a dihybrid cross are

• A. 9
• B. 12
• C. 4
• D. 6

Answer 1

Answer: (A)

The genotypic ratio of a dihybrid cross is
$1:2:2:4:1:2:1:2:1$
Thus, we see that $9$ different genotypes are observed in the $F_2$-generation.