The allele frequency represents the incidence of a gene variant in a population. Alleles are variant forms of a gene that are located at the same position, or genetic locus, on a chromosome.
The Hardy-Weinberg theorem characterizes the distributions of genotype frequencies in populations that are not evolving, and is thus the fundamental null model for population genetics. Under the ...
Mayo Clinic researchers found that a gene variant, the TPMT∗8 allele, is associated with reduced metabolism of the thiopurine ...