The Great Leap Forward
The author uses this term to refer to the relatively short unknown event or series of events that changed pre-modern "Homo sapiens" to fully modern "H. sapiens," and suggests that the physical refinement leading to the capacity for fully developed vocalizations and language is the most likely candidate. This happened 40,000 years ago and left its first unmistakable archeological evidence in Europe.
This is a statistical measure of the interdependence of two variables.
This is the process by which individual organisms with favorable traits survive and reproduce more successfully than those with less favorable traits.
This is the process by which individual organisms exhibit preference for mating partners with specific traits. This allows individuals of the opposite sex possessing certain traits to reproduce more successfully and frequently than those who do not have desirable traits.
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