Question

In a cross between a white-eyed female with two X chromosomes and one Y chromosome (XwXwY)...

In a cross between a white-eyed female with two X chromosomes and one Y chromosome (XwXwY) with a red-eyed male, the majority of the males have white eyes and the majority of the females have red eyes. However, rare red-eyed males and white-eyed females are present as well. What is the most likely chromosomal constitution of the red-eyed males and white-eyed females resulting from this cross?

Notes: Xw is recessive (white) and X+ is dominant (red). The answer is not A or D. I'm thinking it's C or E but I'm not sure.

Also, I am not just looking for the answer but I am also looking for an explanation! Specifically, how do we pair off chromosomes if the female has 3 (2 X and a Y).

A. X+XwY males and Xw females
B. X+XwY females and Xw males
C. X+Y males and XwXwY females
D. XwY males and XwX+ females
E. X+Y males and XwXw females
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Answer #1

Answer-

Chromosomal constitution of red eyed males and white eyed females will be

C) X+Y males and XwXwY females

The explanatiom is given below:

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