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Fig. 1 | Biology of Sex Differences

Fig. 1

From: Sex gap in aging and longevity: can sex chromosomes play a role?

Fig. 1

Graphical display of some mortality metrics mentioned in the article. a represents a standard age-specific mortality curve for a mammalian species. Mortality decreases from birth to early adulthood, then stays low and relatively constant (i.e., prime-age stage) and finally starts to increase. The age when mortality starts to increase is the age at the onset of senescence or aging, and the intensity of the increase in the mortality rate with age is defined by the rate of senescence or aging. Males and females can differ in longevity in various ways. For instance, males and females can differ in the annual adult mortality (b), the age at the onset of aging and (c) the rate of aging (d). We did not represent scenarios where more than one trait can differ between males and females (see Box 1 for a thorough definition of the mortality key terms)

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