For the test of irregularities in the genetic $DNA$ of a developing foetus,the specimen is collected from:

India initiated its family planning program in $1951$. By what name is this program currently known as an improved version?

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?

Misuse of amniocentesis results in

Which is a non-invasive technique of genetic counselling?

Given below are two statements,one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R).$
Assertion $(A):$ Adolescence means both 'a period' and 'a process' during which a child becomes mature in terms of his/her attitudes and beliefs for effective participation in society.
Reason $(R):$ The period between $12-18$ years of age may be thought of as the adolescence period.
In the light of the above statements,choose the most appropriate answer from the options given below: