However, in India, its use for sex determination soon gained prominence. Today, it is almost exclusively being used for sex determination and subsequently for female foeticide. Its ready acceptance by people at large has set the ball in motion. Hence, we have mere refined methods of foetal sex determination and various techniques of sex-preselection on the threshold. It is necessary to understand the basic principles of such techniques before judging their likely repurcussions.
Chromosomes are the carriers of hereditory characters.
Of these, both the chromosomes in each pair are exactly identical in 22 pairs. It is not so in the 23 rd pair which determines the sex of the embryo or foetus. The Sex of the Offspring is Determined at the Moment of Conception and is Unalterable Thereafter. So it's mainly the father who is responsible for the sex of child. The external genitalia of foetus are not clearly distinguishable even upto the fifth month.