If a female fruit fly heterozygous for red eyes (xrxr) crossed with a white-eyed male (xry), what percent of their offspring would have white eyes?

50%

Explanation:

Hello!

We can observe that:

R red eyes

r white eyes

The possible gametes for the female are XR and Xr.

The possible gametes for the male are Xr and Y

XrY

XRXRXrXRY

Xr  XrXrXrY

The expected offspring is:

a red-eyed female (XRXr)

a red-eyed male (XRY)

A female with white eyes (XrXr)

A white-eyed male (XrY)

Success in your homework!

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