creates new alleles from DNAbrings new alleles from other populationsrandomly selects allelesfavors certain alleles Competition for sunlight leads to taller trees.

Competition for sunlight gives taller trees an advantage because they can capture more light. If height is influenced by inherited traits, trees with alleles for greater height are more likely to survive and reproduce, so those alleles become more common. This is selection favoring certain alleles, not the creation or movement of alleles.

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