According to the $1991$ census,the number of females per $1000$ males is:

Which is a non-invasive technique of genetic counselling?

Which of the following statements is incorrect regarding amniocentesis?

Amniocentesis is a process used for:

In amniocentesis,the cells from the amniotic fluid are observed for the presence of which of the following to determine the sex of the fetus?

Which is the first country in the world to initiate action plans and programs at a national level to attain total reproductive health as a social goal?