Question

Cinnabar eyes is a sex-linked recessive characteristic in fruit flies. If a female having cinnabar eyes is crossed with a wild-type male, what percentage of the F1 males will have cinnabar eyes?

a.0%
d.75%
b.25%
e.100%
c.50%

Answer 1

When a female fruit fly with cinnabar eyes is crossed with a wild-type male, none of the F1 males will have cinnabar eyes.

Step-by-step explanation:

Cinnabar eyes in fruit flies is a sex-linked recessive characteristic. When a female fruit fly with cinnabar eyes is crossed with a wild-type male, all the F1 offspring will have wild-type eyes. This is because the wild-type eye color is dominant over the cinnabar eye color. Therefore, the percentage of F1 males with cinnabar eyes would be 0% (option a).