Outline and Evaluate the Relationship Between Sexual Selection and Human Reproductive Behaviour (25 Marks)

Darwin, who introduced the evolutionary theory, checkd sexual infusion as certain(a) behaviours which are due to selective pressure from the social surround meaning, an individual is selected on the basis of productive success. Features that show signs of reproductive success is attractive to the opposite sex as soundly as plays of survival, and also enables them to compete, increasing the individuals chance of echo.

According to Trivers (1972), the sex which invests least in the process of reproduction will compete for the sex that invests less. Intra-sexual selection is used to define those who compete within a species to attract a mate. As males are less investing, they compete within themselves through intra-sexual selection to achieve the dominant position of the alpha male and so have exclusive access to females. Evidence which supports this refers to sexual dimorphism which is the balance in size between males and females. Males tend to be physically larger and stronger than a female which is consistent with the claim that they moldiness compete for access to females. Therefore dimorphism is evidence for intra-sexual selection and polygymy as it suggest males fight for females.

Inter-sexual selection refers to the selection of characteristics between the genders which females bundle upon.



Fishers well-behaved taste hypothesis, also cognise as the sexy sons hypothesis, suggests females selection will be found on desirable characteristics as her offspring will discontinue these thus continuing her genes. This becomes a runaway process. Zahavis good genes hypothesis, states, characteristics such as the peacocks tail, which attracts predators, are a sign of good genes as they have negociated to survive in spite of the handicap, also indicating signs of good health, as they can only manage the handicap. This leads to them being selected as they possess a good genetical quality. Hamilton and Zuk (1982) suggest a male with an exaggerated feature could only...If you unavoidableness to get a full essay, order it on our website: Ordercustompaper.com



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