A gradual change in an organism,from an ancestral type was referred to by Darwin as

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Darwin used the term "descent with modification" to refer to the gradual change in an organism from an ancestral type. This process is a key concept in his theory of evolution. A) Adaptation refers to a trait that has evolved through natural selection to enhance an organism's survival and reproductive success. C) Natural selection is the process by which organisms with advantageous traits are more likely to survive and reproduce. D) Convergent evolution occurs when two different species independently evolve similar traits. E) Artificial selection is the selective breeding of plants or animals to produce desired traits by humans.

A Gradual Change in an Organism,from an Ancestral Type Was