Difference Between Intrasexual and Intersexual Selection

Difference Between Intrasexual and Intersexual Selection: Sexual selection is a type of natural selection that chooses mating pairings and genes passed down to children. Sexual selection may be divided into two kinds: intersexual selection and intrasexual selection. Intersexual selection is a sex interaction in which individuals of one sex pick members of the other sex. Intrasexual selection, on the other hand, is the competition for mates among members of the same sex.

Difference Between Intrasexual and Intersexual Selection

Characteristics	Intrasexual Selection	Intersexual Selection
Definition	Intrasexual selection refers to competition for mates among members of the same sex (typically males).	Intersexual selection occurs when individuals of one sex (typically females) choose members of the other sex.
Sexes	Between members of the same gender.	Between two opposite genders.
Selection	Males compete with one another to chase them away.	Males exhibit unique characteristics or behavioral patterns in order to attract females.

Intrasexual Selection

Intrasexual selection refers to sexual selection amongst members of the same sex to obtain mates. It generally includes males competing to mate with females. Male primate competition is a type of intrasexual selection. A vast, violent male ape tries to keep other male primates away from the females in order to be their preferred mate. This male monkey has the ability to mate and pass on genetic material to its progeny. Furthermore, male deer and horned beetles compete with members of their own sex for mating with females nearby. This form of sexual selection guarantees that good genetic material is passed on to kids. As a result, it is a form of natural selection.

Intersexual Selection

Intersexual selection refers to sexual selection between two sexes. Intersexual selection, in other words, is the sexual selection that happens when individuals of one sex (typically females) pick members of the opposing sex. Intersexual selection is thus the product of interactions between men and females. One sex, particularly males, exhibits features or behavioral patterns in order to attract the other sex (females).genes

• In many species, both intersexual and intrasexual selection impact the evolution of sexually chosen features.
• Sexual selection may be classified into two types: intrasexual and intersexual.
• Sexual selection of either type passes on excellent genes to the following generation.

FAQs on Intrasexual and Intersexual Selection

Q1: Is Intrasexual selection natural selection?

Answer:

Sexual selection is a type of natural selection in which people of one biological sex pick partners of the opposing sex to mate with (intersexual selection) and compete for access to members of the opposite sex (intrasexual selection).

Q2: Why does Intrasexual selection occur?

Answer:

In species, intrasexual rivalry occurs when individuals of the same sex compete for access to possible mates. It happens when individuals of a species reach sexual maturity in animals that exhibit intrasexual competition.

Q3: Is sperm competition an example of intrasexual selection?

Answer:

Sperm competition introduces variation in male reproductive success determined by the relative competitive fertilising efficiency of different males’ ejaculates, and it generates postcopulatory, intrasexual selection, which promotes traits that increase an ejaculate’s fertilisation success under competitive conditions.