sex ratio

the proportion of males to females in a given population at a given life stage, primarily at conception (see conception ratio) or birth (see birth ratio) but also at any stage between birth and death. Also called sex distribution.

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Psychology term of the day

November 27th 2024

weight regulation

a process, governed by a complex array of neural mechanisms and structures (including the hypothalamus), in which the brain seeks an optimum balance between an organism’s food intake and energy expenditure after a certain body weight is achieved. A number of other factors, such as environmental stimuli, may influence the process as well.