Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: Solids are categorized by the forces holding the individual atoms, ions, or molecules together.

Answer: What is categorized by the forces holding the individual atoms, ions, or molecules together?


Question: Pleiotropic effects causes symptoms associated with sickle-cell disease.

Answer: What causes symptoms associated with sickle-cell disease?


Question: Deletions remove one or more nucleotides from the dna

Answer:
Deletions remove one or more what from the dna?