sex ratio

sex ratio defined in 1951 year

sex ratio - sex ratio;
sex ratio - Relative proportion of the numbers of males and females in a population. Usually expressed as number of males per 100 females. Primary sex ratio is that immediately after fertilization; secondary, that at birth (or hatching); tertiary at maturity.

near sex ratio in Knolik

sex linkagehome
letter "S"
start from "SE"

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