sex ratio
noun Sociology.
the proportional distribution of the sexes in a population aggregate, expressed as the number of males per 100 females.
Words nearby sex ratio
Origin of sex ratio
First recorded in 1905–10
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for sex ratio
A modification of the sex-ratio and of other ratios through linkage.
Sex-linked Inheritance in Drosophila|Thomas Hunt MorganTwo sex-linked lethal factors in Drosophila and their influence on the sex-ratio.
Sex-linked Inheritance in Drosophila|Thomas Hunt MorganFrom an F2 culture that gave practically a 2:1 sex-ratio, vermilion females were bred to club males.
Sex-linked Inheritance in Drosophila|Thomas Hunt MorganThe former are always normal in behavior, and the latter repeat in their descendants the 2:1 sex-ratio.
Sex-linked Inheritance in Drosophila|Thomas Hunt Morgan
Medicine definitions for sex ratio
sex ratio
n.
The proportion of males to females in a given population, usually expressed as the number of males per 100 females at a specific stage in life, especially at conception, birth, and a given stage between birth and death.
The ratio of the numbers of males to females affected by a particular disease or trait.
The American Heritage® Stedman's Medical Dictionary
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