True False Branch point 2 is the common ancestor shared uniquely by Taxa A, B, and C. Taxa D and E arose from a common ancestor and are sister taxa. Rotating the tree at branch point 2 would change the relationship between Taxa D and A. Branch point 1 represents the common ancestor of Taxa A-F. Reset Help

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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.