Question

In a Mendelian dihybrid cross, if one trait shows incomplete dominance and other trait shows homozygous dominant lethality then what will be the phenotypic ratio of progenies obtained in $F_2$ generation?

• A. $9:3:3:1$
• B. $2:4:2:1:2:1$
• C. $3:1$
• D. $1:2:1:2:4:2:1:2:1$

Answer 1

The correct option is B $2:4:2:1:2:1$

A- Phenotypic ratio for F2 Generation in a Dihybrid cross is always = 9 : 3 : 3 : 1.