With a knife, a razor blade, scissors or a needle, half of Indonesia’s girls are circumcised, and a new study found that it is a tradition more rooted in family folkways than religion.“Cultural reproduction occurs in the household,” said Sri Purwatiningsih, a researcher of Center for Population and Policy Studies at Gajah Mada University in Yogyakarta. “Circumcised grandmothers tend to circumcise their daughter. A mother who was circumcised by the grandmothers will most likely circumcise their daughter.”Purwatiningsih presented her findings Thursday, the International Day of Zero Tolerance for Female Genital Mutilation, at the university, where the center refers to the procedure as female genital mutilation or cutting.Indonesia ranks third in the world, at 49%, for the rate of prevalence of female circumcision, after Mali, at 83%, and Mauritania, at 51%.…