Question

When a white eye Drosophila male (X^r Y) is crossed to a red eye female (X^R X^R), in the F₂ generation all the females are red eyed and 50% males are white eyed. In a criss-cross test, when males are white eyed. In a criss-cross test, when a white eyed female (X^r X^r) is crossed to a red eye male (X^RY), the F₁ generation offspring had white eyed males while the female offspring bad red eyes. Instead of crossing of a white eyed female (X^r X^r} to a red eyed male (X^RY), white eye female (X^rX^r) to white eye male (X^rY) is crossed, the F₁ generation will have the following phenotypes and genotype.

Options

• 50% females have white eye (X^r X^r, X^R X^r) and all males have white eye (X^r Y, X^r Y)

• All female have white eye (X^r X^r, X^r X^r) and 50% males have red eye (X^R Y, X^r Y)

• All females have white eye (X^r X^r, X^r X^r) and all males have red eye (X^r Y, X^r Y)

• All females have white eye (X^r X^r, X^r X^r) and all males have white eye (X^r Y, X^r Y)

Answer 1

All females have white eye (X^r X^r, X^r X^r) and all males have white eye (X^r Y, X^r Y)