Essay on Sexual Selection

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Sexual selection was an idea proposed by Darwin and refers to the process in which males and females attempt to maximize their chances of reproductive success. Within a species there are certain characteristics that make individuals attractive to potential mates. An example of this is in peacocks, female peacocks are attracted to males with long brightly colored tails, even though this makes them easier to be spotted by predators. This characteristic then evolves within the species due to how males with this characteristic have a higher chance of reproductive success and their characteristics being passed on to surviving offspring.

There are 2 types of sexual selection. Intersexual selection takes place when males compete for the
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Clark and Hatfield helped support this by getting female and male experiments to ask male and female participants if they would like to engage in casual sex. 75% of males said yes while every female participant said no. This helps support the sexual selection theory as it shows that females have to be more careful with mating as they only have a limited amount of opportunities therefore are more likely to enter a longterm mating strategy. Males can have casual sex with little investment so are more likely to then females. This study helps to show the gender differences.

Much of the research documenting sex differences in mate choice focus on preferences rather than on real life choices. So a male may have a preference but may have to settle for much less.

Mate choice is a product of mate preferences form in the environment of evolutionary adaptiveness (EEA). Sexual selection suggests that females prefer males who they can gain benefits from such as gifts. This is shown in male birds who make nests for females in order to mate with them and also in insects who give nuptial gifts.

Sexual selection also suggests that females prefer males who have a strong jawline and prominent cheekbones. These characteristics arise because of a strong presence of testosterone which also helps to indicate
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