Which of these options is NOT an example of a hypothesis that supports the occurrence of ecological speciation:     ecologically divergent pairs of populations should be more reproductively isolated from one another than more ecologically similar pairs of populations     traits that lead to divergent adaptations between populations should lead to reproductive isolation between those populations as well     levels of gene flow between ecologically divergent populations should decrease as populations become more ecologically divergent     ecologically divergent populations should differ in use of signals that relate to mate selection

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Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.