In Fruit Flies, Red-Eyes Are Dominant to White-Eyes

question 12

Multiple Choice

In fruit flies, red-eyes are dominant to white-eyes. In addition, eye color is a sex-linked trait. A red-eyed male Drosophila mates with a red-eyed female Drosophila. One of the female's parents had white eyes. What proportion of the male offspring will have white eyes?

• A) 0%
• B) 25%
• C) 50%
• D) 75%
• E) 100%

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