The Law of Dominance says that when an organism is heterozygous for a trait, only the dominant allele will produce a phenotype.
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Answer:
What causes genetic variation?
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).
Explanation:
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