👉 Heterozygosity is a phenomenon in genetics where two individuals, or more than two individuals from different populations, have identical but distinct traits. This can occur through genetic mutations that result in changes in one gene's sequence of nucleotides. In the context of biology and medicine, heterozygosity can be used to describe the variability of genes within a population, as it allows for the observation of how different genes may interact with each other. In terms of heterozetesis, this