There are five key mechanisms that cause a population, a group of interacting organisms of a single species, to exhibit a change in allele frequency from one generation to the next. These are evolution by: mutation, genetic drift, gene flow, non-random mating, and natural selection (previously discussed here).
What are the mechanisms that lead to evolution?
Mechanisms of evolution correspond to violations of different Hardy-Weinberg assumptions. They are: mutation, non-random mating, gene flow, finite population size (genetic drift), and natural selection.
What are the 4 causes of evolution?
Learning Objectives
- Describe the four basic causes of evolution: natural selection, mutation, genetic drift, and gene flow.
- Explain how each evolutionary force can influence the allele frequencies of a population.
