Use of human genetics in medical science

If knowledge about genetics of human diseases is available, it can be used in a variety of ways to avoid or reduce the incidence of some of these diseases. This can be achieved in a variety of ways and we will describe five of them, namely (i) genetic counselling, (ii) antenatal diagnosis, (iii) gene therapy, (iv) making choice of baby's sex, and (v) DNA fingerprinting in forensic science.