Gene polymorphism refers to the simultaneous and frequent existence of two or more discontinuous variants or genotypes (genotypes) or alleles (alleles) in a biological population, also known as genetics. Genetic polymorphism. In essence, polymorphisms arise from variations at the gene level, which generally occur in regions of the gene sequence that do not encode proteins and that do not have important regulatory functions. For an individual, the sequence of genetic polymorphisms remains unchanged throughout life and is passed down from generation to generation according to Mendelian rules.

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