Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Input: Consider Input: Question: How many alleles comes from each parent? Answer: one

Output: When gametes unite during fertilization, the resulting zygote inherits two alleles for each gene. One allele comes from each parent.

Input: Consider Input: Question: As a polycrystalline material solidifies, grains with irregular shapes form. the interfaces between grains constitute grain what? Answer: boundaries

Output: Grain boundaries. As a polycrystalline material solidifies, grains with irregular shapes form. The interfaces between grains constitute grain boundaries. (Squares represent unit cells within grains.

Input: Consider Input: Question: Mirrors and lenses are used in optical instruments to reflect and refract what? Answer: light
Output: Mirrors and lenses are used in optical instruments to reflect and refract light. Optical instruments include microscopes, telescopes, cameras, and lasers.