Natural selection acts directly on
a
b
ос
existing variations.
genetic material.
changes in the environment.
successful individuals.
d
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Answer:
Genetic material
BecauseIt can increase the genetic variation in populations by selecting for or against several genes or gene combinations (leading to disruptive selection or balancing selection). Natural selection might lead to speciation through the accumulation of adaptive genetic differences among reproductively isolated populations.
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