Source: BBC News
A strong socio-cultural preference for boys in conservative Asian societies is blamed for most of the sex selection. In overwhelmingly patriarchal India, dowry makes daughters expensive. China’s one-child policy is thought to be a trigger as women abort girls to have a single boy.
Amniocentesis tests and ultrasound scans have led to more than 160 million girls being aborted in Asia alone since then, according to one widely quoted 2005 estimate.