Allele Frequencies

Allele frequencies describe how common a specific version of a gene (allele) is within a population. For example, if a gene has two variants, A and a, and 70% of people carry A while 30% carry a, the allele frequencies are 0.7 for A and 0.3 for a. These frequencies can change over time due to factors like natural selection or migration. Understanding allele frequencies helps scientists learn about genetic diversity, how traits spread, and how populations evolve.