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

Q: Sexual reproduction, in general, relies on sets of cells that are precursors for eggs and sperm.

A: What kind of reproduction, in general, relies on sets of cells that are precursors for eggs and sperm?
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Q: The goal of proteomics is to identify or compare proteins expressed from a given genome under specific conditions, study the interactions between them, and use the information to predict cell behavior or develop drug targets.

A: The goal of proteomics is to identify or compare what substances expressed from a given genome under specific conditions, study the interactions between them, and use the information to predict cell behavior or develop drug targets?
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Q: Convex mirrors diverge light rays and, thus, have a negative focal length.

A:
What mirrors diverge light rays and, thus, have a negative focal length?
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