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

Darwin, who introduced the evolutionary theory, checkd finishual infusion as certain(a) behaviours which are imputable 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 mesmerizing to the opposite sex as soundly as plays of survival, and likewise enables them to get by, 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 little. Intra-sexual selection is used to define those who compete deep down a species to attract a mate. As males are less investing, they compete within themselves through intra-sexual selection to achieve the preponderating position of the alpha male and so have unshared admission charge to females. Evidence which supports this refers to sexual dimorphism which is the balance in size of it between males and fem ales. 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 conjure up males hold for females. Inter-sexual selection refers to the selection of characteristics between the genders which females bundle upon. Fishers well-behaved taste hypothesis, similarly cognise as the prurient sons hypothesis, suggests females selection will be found on plummy characteristics as her offspring will discontinue these thus continue her genes. This becomes a runaway process. Zahavis healthy 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 be selected as they possess a good genetical quali ty. Hamilton and Zuk (1982) suggest a male w! ith an exaggerated feature could only...If you unavoidableness to get a full essay, order it on our website: OrderEssay.net

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