Evolution and natural selection can be witnessed in the human population by examining

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All of the listed options demonstrate examples of how natural selection has affected the human population. Skin-tone variation and sunlight exposure illustrate how populations living nearer to the equator have evolved darker skin to protect against harmful UV radiation. The sickle-cell trait and malaria provide an example of how heterozygotes have an advantage in surviving malaria, leading to an increased occurrence of the trait in certain populations. Lactase persistence has evolved in populations with a history of cattle farming, allowing them to digest lactose as adults, while the CF allele provides resistance to cholera in certain populations.

Evolution and Natural Selection Can Be Witnessed in the Human