Hardy

Hardy’s principle is a concept in genetics and population biology stating that, in the absence of external forces like selection or mutation, the genetic makeup of a large, stable population will remain constant across generations. Specifically, it predicts how the frequencies of alleles (gene variants) and genotypes (genetic combinations) stay in balance. This principle helps scientists understand how genetic variation persists or changes over time, serving as a baseline model to compare real populations and identify factors like natural selection or genetic drift that cause evolutionary changes.