New Delhi: A study that analysed genes of South Indian populations suggests a high inbreeding rate of nearly 60 per cent. The historic practice of inbreeding or endogamy in which one marries within a small community, increases chances of passing down disease-causing gene variants changes to ones DNA to children, thereby raising the risk of genetic disorders. Lead author Kumarasamy Thangaraj, senior scientist at the Council of Scientific and Industrial Research (CSIR)-Centre for Cellular a