Two closely related species of fruit fly have the following characteristics: Fly

ID: 53759 • Letter: T

Question

Two closely related species of fruit fly have the following characteristics:

Fly 1: light red eyes, lots of bristles, stripes on the wings

Fly 2: dark red eyes, lots of bristles, stripes on the wings

A more distantly related species has the following characteristics:

Distant relative: light red eyes, lots of bristles, no stripes on the wings

Q. What are the most likely characteristics of the most recent common ancestor of Fly 1 and Fly 2?

a. lots of bristles; can't tell on other two traits

b. lots of bristles, stripes on the wings; can't tell on eye color

c. lots of bristles, stripes on the wings, dark red eyes

d. lots of bristles, stripes on the wings, light red eyes

The answer is :

b. lots of bristles, stripes on the wings; can't tell on eye color

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