Dictionary of Human Evolution and Biology

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Differential Male Mortality

Explanation of increased mortality in males as a function of individual reproductive success. Certain males possess traits that are advantageous in terms of reproduction, but those same traits incur the cost of a lowered probability of ultimate survival. Higher male mortality is common in most species, and is nearly universal in human societies.

See sex ratio adjustment and unguarded X chromosome.

Cf. differential female mortality.

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