Genetics is nowadays said to be the future of medicine. In recent years, it has been developing as rapidly as perhaps no other field of science, and as a result, it is serving us better and better. Tests are becoming simpler, cheaper and more accessible. With the help of genetic testing, we can now determine much more than with standard tests, such as whether a person is at risk of developing cancer, whether a child growing in its mother's body is developing correctly, and implement appropriate preventive measures to reduce the risk of developing a disease.