Microevolution

Microevolution is the change in allele frequencies that occurs over time within a population.^[1] This change is due to four different processes: mutation, selection (natural and artificial), gene flow and genetic drift. This change happens over a relatively short (in evolutionary terms) amount of time compared to the changes termed macroevolution.

Population genetics is the branch of biology that provides the mathematical structure for the study of the process of microevolution. Ecological genetics concerns itself with observing microevolution in the wild. Typically, observable instances of evolution are examples of microevolution; for example, bacterial strains that have antibiotic resistance.

Microevolution provides the raw material for macroevolution.^[2]^[3]

^ Microevolution: What is microevolution?
^ Stanley, S. M. (1 February 1975). "A theory of evolution above the species level". Proceedings of the National Academy of Sciences. 72 (2): 646–650. Bibcode:1975PNAS...72..646S. doi:10.1073/pnas.72.2.646. ISSN 0027-8424. PMC 432371. PMID 1054846.
^ Hautmann, Michael (2020). "What is macroevolution?". Palaeontology. 63 (1): 1–11. doi:10.1111/pala.12465. ISSN 0031-0239.

[talkorigins-1] Microevolution: What is microevolution?

[:0-2] Stanley, S. M. (1 February 1975). "A theory of evolution above the species level". Proceedings of the National Academy of Sciences. 72 (2): 646–650. Bibcode:1975PNAS...72..646S. doi:10.1073/pnas.72.2.646. ISSN 0027-8424. PMC 432371. PMID 1054846.

[:1-3] Hautmann, Michael (2020). "What is macroevolution?". Palaeontology. 63 (1): 1–11. doi:10.1111/pala.12465. ISSN 0031-0239.

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