Insects with mutations that prevent flight (e.g., the "vestigial wing" mutation in fruit flies) usually can't survive long in nature. But in four of the following environments, flightlessness could be selected for. Which environment should favor the survival of fruit flies that can actually fly?

Question

Insects with mutations that prevent flight (e.g., the "vestigial wing" mutation in fruit flies) usually can't survive long in nature. But in four of the following environments, flightlessness could be selected for.  Which environment should favor the survival of fruit flies that can actually fly?

Accepted Answer

a cage in which food cannot be reached by sole use of the legs

Answer

a forest full of bats that catch and eat insects while in flight

Answer

a cage with slippery walls that insects can't climb and an electrified screen on top that electrocutes insects that touch it

Answer

an island where stiff winds blow some flying insects out to sea, only to drown

Answer

a swamp full of frogs that can see and catch flying insects better than crawling insects

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Insects with mutations that prevent flight (e.g., the "vestigial wing" mutation ...

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