Vhy was natural selection controversial to biologists in Darwin's time? A) It was a cruel and unfair principle as to why species change. It went against the religious beliefs of the time. There was no evidence that descent with modification during Darwin's time. He had no explanation for how advantageous traits were passed from parent to offspring.

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A:

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A: PLEASE LEAVE A HELPFUL RATING. THANKS

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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.