5.
Sex
ratio
In
a given population the ratio of female and male organisms defined sex ratio. It
is majorly categorized into primary and secondary sex ratio
a.
Primary
sex ratio
At conception
the female to male ration represent the primary sex ratio which usually tends
to be 1:1.
b.
Secondary
sex ratio
During the birth time
the ratio of female to male represents the secondary sex ratio and in humans it
is generally biased towards male organisms.
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