Selection based on variation in secondary sex characteristics, leading to the enhancement of sexual dimorphism.

In Darwin’s theory of evolution, this is the term for the female animal’s choice of partner(s) from a large group of potential mates, based on the sexual characteristics of the males — longest tail, brightest color, most antlers, etc. According to Darwin, sex characteristics that inspire sexual selection, like the peacock’s tail, evolve even though [..]

a form of natural selection in which characteristics (e.g., bright plumage, deeper voices) preferred by female mates are passed down to later generations.

In a population, the force that drives the proliferation of phenotypes that confer a mating advantage. © Nature Education

Sexual selection is a theoretical mechanism for the developing of anatomical and behavioural differences between the two sexes. It was proposed in 1871 by British a naturalist Charles Darwin (1809-188 [..]

Sexual selection is the means by which members of one biological sex of a species choose mates of the opposite sex. This process varies widely between species and is highlighted by strategies by which [..]

Darwin’s theoretical mechanism for the evolution of anatomical and behavioral differences between males and females.

Selection arising from variation in the ability to find a mate.

traits that affect ability to attract a mate (e.g., bright colors) that are preferred and thus are selected for over time in the process of evolution

The selection or choice of Sexual Partner in Animals. Often this reproductive preference is based on traits in the potential mate, such as coloration, size, or behavioral boldness. If the chosen ones [..]

Sexual selection is the process by which a character increases in frequency in a population because it enables the organism to acquire more mates. It was first described by Darwin, who discussed two k [..]

The increased reproductive success of males or females because of characters that enhance either their ability to compete with members of the same sex or their attractiveness to members of the opposit [..]

This is what is happening if an individual chooses a mate from a set of potential mates. For example, there are several kinds of birds where the males have enormous tail feathers. It has been proven ( [..]

Differential reproduction as a result of variation in the ability to obtain mates.

an evolutionary mechanism by which traits that increase the ability of individuals to attract or acquire mates appear with increasing frequency in a population; selection in which a mate is chosen on [..]

Charles Darwin’s evolutionary mechanism whereby members of one sex compete for the attention of members of the opposite sex.