is the process that breaks down nucleic acids into nucleotides A. Hydrolysis

B. Synthesis

C. Dehydration synthesis

D. Polymerization

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A. hydrolysis is the process that breaks down nucleic acids into nucleotides

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).