Sex ratios

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The sex ratio is the ratio of males to females in a population.This is a widely accepted view.Across the world there are differences in the sex ratio at different life stages.In the human species the ratio between males and females at birth is slightly biased towards the male sex.Sex ratios males to females rose markedly in China in the last two decades, and crime rates nearly doubled.

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Sahand K.When the balance of the sexes is skewed towards one gender, parents are more likely to split up, leaving the father to care for the offspring, says a study from an international team of scientists studying bird populations.In anthropology and demographythe human sex ratio is the ratio of males to females in a population.

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