Multiple choice

A white-eyed female fruitfly is crossed with a red-eyed male fruitfly. Red eyes are dominant, and X-linked. What are the expected phenotypes of their children?

  1. 100% females will have red eyes while 50 % males will have red eyes, and 50% males will have white eyes.

  2. 100% females and 100% males will have white eyes.

  3. 100% females will have red eyes & 100% males will have white eyes.

  4. 100% females and 100% males will have red eyes.

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

As per the question, all of the females are red-eyed and heterozygous. All of the males are white-eyed and hemizygous.