Examlex
Race has much more significance socially than it does biologically.
Primates
An order of mammals characterized by large brains, forward-facing eyes, and complex social structures, including humans, monkeys, and apes.
Grandmother Hypothesis
A theory positing that the presence and assistance of post-menopausal women, especially grandmothers, can significantly increase the survival rates of their grandchildren, thereby influencing human evolution.
Life-history Hypothesis
A theory that explains how natural selection operates on traits that affect an organism's life cycle, such as reproductive timing, growth, and survival.
Mean Reproductive Spans
The average duration between an individual's first and last reproductive events within a population.
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