In case of a person suffering from syphilis, the chancre formation occurs during
Primary stage
Secondary stage
Tertiary stage
Neurosyphilis stage
Human population after $17$th century $A.D.$ is thought to be in
$A$ : Inability to conceive or produce children even after $2 \;years$ of unprotected sexual cohabitation is infertility.
$R$ : In vitro fertilization followed by transfer of embryo into the female genital tract is ‘Test Tube Baby’ programme
The percentage of population of India living in M.P. at present is
Lactational amenorrhoea, is a natural way of birth spacing. It is due to the high level of
Condition in which motility remains very less is