Sexual Selection in a sentence

Alternatively, natural selection is sometimes defined as synonymous with ecological selection, and sexual selection is then classified as a separate mechanism to natural selection.

Ecological selection is natural selection via any other means than sexual selection.

As with all other organ functions, cognition 's functional structure has been argued to have a genetic foundation, and is therefore subject to the effects of natural selection and sexual selection.

Many non-exclusive hypotheses have been proposed, citation including the positive impact of an additional form of selection, sexual selection, on the probability of persistence of a species.

Painting by John Gerrard Keulemans (d.1912) Sexual selection is a form of natural selection where one sex prefers a specific characteristic in an individual of the other sex.

Typically, sexual selection proceeds via fecundity selection, sometimes at the expense of viability.

Cambridge University Press p. 277 Mating main Given that sexual reproduction is the means by which genes are propagated into future generations, sexual selection plays a large role in human evolution.

Sexual selection is the only theory thus far that explains the sexual dimorphism seen in the hair patterns of men and women.

Such sexual selection results in the males of these species, including the Guianan cock-of-the-rock, being brightly coloured, or decorated with plumes or wattles, like the umbrella birds, with their umbrella-like crest and long throat wattles.

Therefore, sexual selection acts strongly on males.

Cambridge University Press, New York, NY. 250 pp. have provided detailed mathematical proofs that define the circumstances under which runaway sexual selection can take place.

Darwin applied the theory of evolution and sexual selection to humans when he published The Descent of Man in 1871.

Dawkins (e.g. 2004) has argued that it could have begun as a kind of fashion that just caught on and then escalated through sexual selection.

Dixson, A.F. Sexual Selection and the Origins of Human Mating Systems.

For instance, mate choice and sexual selection can accelerate the evolution of physical differences between the sexes.

Hence, they argue in favor of his suggestion that sexual selection may be responsible for such traits.

In fact, while the sexual selection hypothesis cannot be ruled out, the asymmetrical distribution of this trait vouches for environmental influence.

In most species, only the male grows antlers and the antlers primarily function in sexual selection as attractions to females and as weapons in fights for control of harems.

In the past few years, the field has exploded to include many additional observations and areas of study, not all of which are clearly included under Darwin's definition of sexual selection.

It is commonly believed that the dimorphisms found in raptors occur due to sexual selection or environmental factors.