Question

a scientist bred fruit flies in two separate containers with different food sources for many generations. when she put the fruit flies from the two containers together again, she observed that the flies preferred mates raised on the same food. which conclusion can the scientist draw?

a. fruit flies prefer mates adapted to the same food source.
b. fruit flies mate randomly regardless of how they were bred.
c. fruit flies prefer the container where they were bred.
d. fruit flies can adapt to eating different food sources.

Explanation:

The scientist observed that fruit flies preferred mates raised on the same food. This indicates a preference based on food - source adaptation. Option B is incorrect as there is a preference shown, not random mating. Option C is about container preference which is not the focus. Option D is about adapting to food sources (eating) but the observation is about mating preference.

Answer:

A. Fruit flies prefer mates adapted to the same food source.