Chapter 15

Last update by Shanal on 10/20/2013
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When Thomas Hunt Morgan crossed his red-eyed F1 generation flies to each other, the F2 generation included both red- and white-eyed flies. Remarkably, all the white-eyed flies were male. What was the explanation for this result?

A) The involved gene was on the X chromosome.

B) The involved gene was on the Y chromosome.

C) The involved gene was on an autosome.

D) Other male-specific factors influence eye color in flies.

E) Other female-specific factors influence eye color in flies.

Answer:
A) The involved gene was on the X chromosome.

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