Want to have a healthy baby, what are genes and inheritance?

Gene is the basic genetic unit carried by chromosome and the place where genetic information is stored. Its chemical composition is deoxyribonucleic acid. It is a trait that determines human characteristics and can transmit genetic information to future generations. The three characteristics of a gene are stable. It can faithfully replicate itself, so that organisms can keep their own racial characteristics. Can control the metabolism of cells. It has the characteristics of mutation, which makes life evolve and develop continuously. Chromosomes and genes are the decisive characteristics of heredity and play a very important role in heredity. The study of human chromosomes and genes has promoted the development of medical genetics and provided a new basis for the diagnosis and treatment of some known hereditary diseases.