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[[File:CollapsedtreeLabels-simplified.svg|thumb|400px|right|A diagram showing the relationships between various groups of organisms]]
[[File:CollapsedtreeLabels-simplified.svg|thumb|400px|right|A diagram showing the relationships between various groups of organisms]]
{{Evolutionary biology}}
{{Evolutionary biology}}
'''[[Evolution]]''' is change in the [[heredity|heritable]] [[Phenotypic trait|characteristics]] of [[Organisms|biological organisms]] over generations due to [[natural selection]], [[mutation]], [[gene flow]], and [[genetic drift]]. Also known as '''descent with modification'''. Over time these evolutionary processes lead to formation of new species ([[speciation]]), changes within lineages ([[anagenesis]]), and loss of species ([[extinction]]). "Evolution" is also another name for [[evolutionary biology]], the subfield of [[biology]] concerned with studying [[Evolution|evolutionary processes]] that produced the [[diversity of life]] on Earth.
In [[biology]], '''[[evolution]]''' is change in the [[heredity|heritable]] [[Phenotypic trait|characteristics]] of [[Organisms|biological organisms]] over generations due to [[natural selection]], [[mutation]], [[gene flow]], and [[genetic drift]]. Also known as '''descent with modification'''. Over time these evolutionary processes lead to formation of new species ([[speciation]]), changes within lineages ([[anagenesis]]), and loss of species ([[extinction]]). "Evolution" is also another name for [[evolutionary biology]], the subfield of [[biology]] concerned with studying [[Evolution|evolutionary processes]] that produced the [[diversity of life]] on Earth.


==Fundamentals about evolution==
==Fundamentals about evolution==

Revision as of 14:10, 16 February 2023

The following outline is provided as an overview of and topical guide to evolution:

A diagram showing the relationships between various groups of organisms

In biology, evolution is change in the heritable characteristics of biological organisms over generations due to natural selection, mutation, gene flow, and genetic drift. Also known as descent with modification. Over time these evolutionary processes lead to formation of new species (speciation), changes within lineages (anagenesis), and loss of species (extinction). "Evolution" is also another name for evolutionary biology, the subfield of biology concerned with studying evolutionary processes that produced the diversity of life on Earth.

Fundamentals about evolution


Introduction

Basic principles

  • Macroevolution – Evolution on a scale at or above the level of species
    • Speciation – Evolutionary process by which populations evolve to become distinct species
      • Natural speciation
        • Allopatric speciation – Speciation that occurs between geographically isolated populations
        • Peripatric speciation – speciation in which a new species is formed from an isolated smaller peripheral population
        • Parapatric speciation – Speciation within a population where subpopulations are reproductively isolated
        • Sympatric speciation – Evolution of a new species from an ancestor in the same location
      • Artificial speciation
      • Hybrid speciation – Form of speciation involving hybridization between two different species
    • Despeciation – Loss of a species of animal due to its combining with another species
    • Anagenesis – Gradual evolutionary change in a species without splitting
    • Extinction – Termination of a taxon by the death of its last member
  • Microevolution – Change in allele frequencies that occurs over time within a population
    • Artificial selection – Breeding used to develop desired characteristics
    • Natural selection – Mechanism of evolution by differential survival and reproduction of individuals
      • Sexual selection – Mode of natural selection involving the choosing of and competition for mates
    • Mutation – Alteration in the nucleotide sequence of a genome
    • Gene flow – Transfer of genetic variation from one population to another
    • Genetic drift – Concept in genetics

Subfields

History

Evolutionary theory and modelling

See also Basic principles (above)

Population genetics

Evolutionary phenomena

Modelling

Taxonomy, systematics, and phylogeny

Fundamentals

Basic concepts of phylogenetics

  • Phylogenetic tree – Branching diagram of evolutionary relationships between organisms
  • Phylogenetic network – Graph used to visualize evolutionary relationships, including reticulation events
  • Long branch attraction – Systematic error in phylogenetics
  • Clade – Group of a common ancestor and all descendants
  • Grade – Non-monophyletic grouping of organisms united by morphological or physiological characteristics
  • Ghost lineage – Phylogenetic lineage that is inferred to exist but has no fossil record

Inference methods

Current topics

Group Traits

  • Symplesiomorphy – An ancestral character or trait state shared by two or more taxa
  • Apomorphy – Two concepts on heritable traits
  • Synapomorphy – Two concepts on heritable traits
  • Autapomorphy – Distinctive feature, known as a derived trait, that is unique to a given taxon

Group Types

  • Monophyly – Property of a group of including all taxa descendant from a common ancestral species
  • Paraphyly – Type of taxonomic group
  • Polyphyly – Property of a group not united by common ancestry

Evolution of biodiversity

Origin and evolutionary history of life

Evolution of organisms

Evolution of tetrapods

Evolution of other animals

Evolution of plants

Evolution of other taxa

Evolution of cells, organs, and systems

Evolution of molecules and genes

Evolution of behaviour

Evolution of other processes

Applications in other disciplines

Evolutionary issues

Controversy about evolution

Religious and philosophical views of evolution

Influence of evolutionary theory

Publications and organizations concerning evolution

Books

Journals

Organizations

Evolution scholars and researchers

Prominent evolutionary biologists

See also

General information
  • Evolution on In Our Time at the BBC
  • "Evolution". New Scientist. Retrieved May 30, 2011.
  • "Evolution Resources from the National Academies". U.S. National Academy of Sciences. Retrieved May 30, 2011.
  • "Understanding Evolution: your one-stop resource for information on Evolution". University of California, Berkeley. Retrieved May 30, 2011.
  • "Evolution of Evolution – 150 Years of Darwin's "On the Origin of Species"". National Science Foundation. Retrieved May 30, 2011.
  • Human Timeline (Interactive)Smithsonian, National Museum of Natural History (August 2016).
Experiments concerning the process of biological evolution
Online lectures