Question 1 of 10 2 Poir
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 hypothesis was the scientist most likely testing?
A. Fruit flies breed too quickly.
B. Diet determines mate size.
O C. Fruit flies are picky eaters.
O D. Diet affects mate choice.
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