Question

 If a red eyed male Drosophila and white eyed female Drosophila are crossed, the eye color in their offspring is:

• A. Females red eyed and males white eyed
• B. All are red eyed
• C. All are white eyed
• D. Female white eyed and males red eyed

Hint:

In sex-linked inheritance, the trait is carried on the X chromosome, and the expression differs between males and females due to their different sex chromosome combinations.

Answer 1

The Correct Option is A

In Drosophila, the gene for eye color is sex-linked. If a red-eyed male
(X^r Y )iscrossedwithawhite −
eyed male(X^wX^w), the F1 generation will have females with red eyes(X^rX^w)and males with white eyes(X^w )