Answer:
An experiment involving a gender-selection method includes a control group of 15 couples who are not given any treatment includes a control group of 15 couples who are not given any treatment intended to influence the gender of their babies. ... The genders of babies to 15 couples are independent of each others.
While clinics are not legally allowed to determine the sex of the embryo, the PC-PNDT Act does not stop people from going to countries where sex-selective IVF is legal. Over the years, medical tourism to countries like Thailand, specifically for sex-selective IVF, has grown into a considerable market.