Question

If x is the phenotypic ratio of monohybrid cross for trait A and Y is the phenotypic ratio of monohybrid cross for trait B, what would be the phenotypic ratio of a dihybrid cross involving trades Aand B?

• A. xy
• B. x+y
• C. X^2+y^2
• D. (xy)^2

Answer 1

Answer:

A. xy

For a dihybrid cross involving two traits,the independent law of assortment states that the traits would segregate independently da of each other. Thus the phenotypic ratio would be xy.