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Sex Differences in Parental Investment

Daly and Wilson ­ by expending a large part of reproductive effort on courtship and mating, males
of most species can devote rather little in parental care, in comparison to females

Maternal Investment

Females produce far less gametes (eggs) than what the male produces ­…

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Evaluation

Consequences of greater investment by females

Extramarital affairs
Expense of childrearing means females want to ensure good quality offspring so they don't waste
efforts
One way to achieve is marrying man with good resources and caring but also shop around for good
genes through extramarital affairs with attractive men…

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