Which of the following factors are required in order for evolution to occur?   a. Individuals within a population must be receptive to change and collectively determine which trait(s) is/are to be modified in subsequent generations   b. Genetic variation within a population must exist or have the potential to arise, and shifts in allelic frequencies will take place or have the potential to take place   c. Individuals within a population should be able to reproduce effectively (i.e., without barriers to reproduction existing)   d. Both A & B   e. Both B & C

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Q: Jean-Baptiste Lamarck

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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.