Match the description with the correct term. • a common ancestor diversifies and the various species all have different adaptations the idea that inherent variation in a population allows for certain traits to be selected for and carried on to future generations of the population experiencing an environmental pressure a model suggesting the gradual change of a species in a linear fashion to form distinct species organisms that have a common ancestry but develop body parts that perform different functions • two populations become reproductively isolated (can no longer reproduce successfully) the idea that different mating calls of birds used during mating season has led to different species of birds ✔ Choose... theory of natural selection. homologous structures gradualism biological barrier to reproduction speciation adaptive radiation Choose... Choose... Choose... Choose... ( 4h 0

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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.