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Social forces appear to have directed much of the evolution of humanity but we are still subject to natural selection.
Primate taxonomy (see books: phylogeny, taxonomy, systematics) is in a state of flux due to the discoveries made in primate genetics.
Evolution & Ecology " (see its HOME PAGE .) The result is that some areas, such as the glossary are shared.
Widgets Human evolution from an ancestral primate species is not a vague hypothesis, but a historical fact.
Mammals and subsequently humanity may not have become dominant on earth had it not been for the global catastrophe that led to the extinction of the dinosaurs 65 million years ago.Very simply, there are five basic principles to this theory:  Variation has a genetic origin (i.e.is heritable) and arises through processes such as mutation and recombination.The evolution of a species is linked to the environment.Adaptation is a continuous response to the environment by changeable species.