From The Art and Popular Culture Encyclopedia

Revision as of 00:20, 11 February 2013 Jahsonic (Talk | contribs) ({{Template}} '''Sex ratio''' is the ratio of males to females in a population. The primary sex ratio is the ratio at the time of conception, secondary sex ratio is the ratio at time of) ← Previous diff		Current revision Jahsonic (Talk | contribs)
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-	'''Sex ratio''' is the [[ratio]] of [[male]]s to [[female]]s in a [[population]]. The primary sex ratio is the ratio at the time of conception, secondary sex ratio is the ratio at time of birth, and tertiary sex ratio is the ratio of mature organisms.	+
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-	The [[human sex ratio]] is of particular interest to anthropologists and demographers. In humans the secondary sex ratio is commonly assumed to be 105 [[boy]]s to 100 [[girl]]s (which sometimes is shortened to "a ratio of 105"). In human societies, however, sex ratios at birth or among infants may be considerably skewed by [[sex-selective abortion and infanticide]]. The CIA estimates that the current world wide sex ratio at birth is 107 boys to 100 girls.	+
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-	In [[biology]], sex ratio is defined as the proportion of males in the population.	+
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