Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: If two populations do not mate and produce fertile offspring, separate species result.

A: If two populations do not mate and produce fertile offspring, what results?
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Q: Darwin believed in gradualism.

A: Did darwin believe in punctuated equilibrium or gradualism?
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Q: The proximity of the axillary buds to the apical bud is partly responsible for their dormancy.

A:
The proximity of the axillary buds to the apical bud is partly responsible for their what?
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