Genetic polymorphism, also called genetic polymorphism. It refers to the simultaneous or frequent presence of two, or more, genes with discontinuous variations in a given population of organisms. Essentially, polymorphisms are variations that arise at the gene level and generally occur in regions that do not code for proteins and have little or no significant regulatory function. In the case of an individual, the base order of a genetic polymorphism is essentially constant throughout life and is transmitted from generation to generation according to Mendelian laws. The phenomenon of genetic polymorphism is very common in biological populations, and according to the more intensive study of human genes, structure, expression and capacity, genetic polymorphism in the human body basically arises from differences in the copy data of repetitive sequences in the gene assemblies.