Genetics has important guiding significance for studying the origin of life on earth, medicine, agricultural animal and plant and microbial breeding, as well as anthropology and sociology. It was developed on the basis of animal and plant breeding, and it is bound to be able to Come back to know the practice of animal and plant breeding. The rise of the antibiotic industry has promoted the development of microbial genetics, and the development of microbial genetics has also promoted the progress of the antibiotic industry and other fermentation industries. This text mainly introduces:. ['Evolution of each branch of genetics.', 'Ways of Life Science to Social Science Operations.', 'Disciplinary basis and guiding significance of genetics.', 'Broad application prospects of genetics.']