When comparing humans to other primates, human differences between males and females suggest that sexual selection

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Human differences between males and females suggest that sexual selection has played an important role. For example, human males tend to be larger and have more muscle mass than females, which is likely the result of male-male competition for mates. Additionally, human females tend to have a higher investment in offspring, which can be seen in their larger body size relative to other primates and in their longer gestation and lactation periods. These differences are consistent with sexual selection theory, which suggests that certain traits evolve in response to competition for mates or preference by the opposite sex.

When Comparing Humans to Other Primates, Human Differences Between Males