definition evolution, mutation, genetic drift, or migration.
A case study of coevolution. Genetic drift. Genetic drift â along with natural selection, mutation, and migration â is one of the basic mechanisms of evolution. In each generation, some individuals may, just by chance, leave behind a few more descendents (and genes, of course!) than other individuals.
Support this project. Genetic drift. Genetic drift  along with natural selection, mutation, and migration  is one of the basic mechanisms of evolution. In each generation, some individuals may, just by chance, leave behind a few more descendents (and genes, of course!) than other individuals.The genes of the next generation will be the genes of the lucky individuals, not necessarily the healthier or better individuals. That, in a nutshell, is genetic drift.It happens to ALL populations  there's no avoiding the vagaries of chance.he genes of the next generation will be the genes of the lucky individuals, not necessarily the healthier or better individuals. That, in a nutshell, is genetic drift. It happens to ALL populations  there's no avoiding the vagaries of chance.