Evolution - Wikipedia
Evolution is the change in the heritable characteristics of biological populations over successive generations. [1][2] It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations. [3] .
Evolution | Definition, History, Types, & Examples | Britannica
2025年1月9日 · Evolution, theory in biology postulating that the various types of living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations.
Evolution Definition & Meaning - Merriam-Webster
The meaning of EVOLUTION is descent with modification from preexisting species : cumulative inherited change in a population of organisms through time leading to the appearance of new forms : the process by which new species or populations of living things develop from preexisting forms through successive generations; also : the scientific ...
Theory of Evolution - Education
2023年10月19日 · The theory of evolution is a shortened form of the term “theory of evolution by natural selection,” which was proposed by Charles Darwin and Alfred Russel Wallace in the nineteenth century.
Evolution – Definition, Types, Advantages, Examples
2024年11月13日 · Evolution is the process by which species change over time through the gradual accumulation of genetic variations, driven by mechanisms like natural selection, genetic drift, and mutation, leading to the development of new traits or species.
Evolution - Natural Selection, Adaptation, Genetics | Britannica
2025年1月9日 · Biological evolution is the process of change and diversification of living things over time, and it affects all aspects of their lives—morphology (form and structure), physiology, behaviour, and ecology. Underlying these changes are changes in the hereditary materials.
Introduction to evolution - Wikipedia
Evolution is the principal scientific theory that biologists use to understand life and is used in many disciplines, including medicine, psychology, conservation biology, anthropology, forensics, agriculture and other social-cultural applications.
Evolution - Meaning, Types, History and Examples
2023年11月30日 · Evolution is a biological process in which inherited traits of any individual or population start transforming or shifting from one generation to another. Evolution occurs through genetic drift and natural selection which causes evolutionary changes.
Evolution - National Human Genome Research Institute
2 天之前 · Evolution, as related to genomics, refers to the process by which living organisms change over time through changes in the genome. Such evolutionary changes result from mutations that produce genomic variation, giving rise to individuals whose biological functions or physical traits are altered.
Evolution 101
Menu. Home; Evolution 101. An introduction to evolution: what is evolution and how does it work? The history of life: looking at the patterns – Change over time and shared ancestors; Mechanisms: the processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise ...