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Natural selection - Wikipedia
Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations. Charles Darwin popularised the term "natural selection", contrasting it with artificial … 展开
Pre-Darwinian theories
Several philosophers of the classical era, including Empedocles and his intellectual successor, the Roman poet Lucretius, expressed the idea that … 展开Heritable variation, differential reproduction
Natural variation occurs among the individuals of any … 展开Natural selection can act on any heritable phenotypic trait, and selective pressure can be produced by any aspect of the environment, including sexual selection and competition with members of the same or other species. However, this does not imply that natural … 展开
Genotype and phenotype
Natural selection acts on an organism's phenotype, or physical characteristics. Phenotype is determined by an organism's genetic make-up … 展开The term natural selection is most often defined to operate on heritable traits, because these directly participate in evolution. However, natural selection is "blind" in the sense that changes in phenotype can give a reproductive advantage regardless of … 展开
Natural selection is seen in action in the development of antibiotic resistance in microorganisms. Since the discovery of penicillin in 1928, antibiotics have been used to fight bacterial … 展开
A prerequisite for natural selection to result in adaptive evolution, novel traits and speciation is the presence of heritable genetic variation that … 展开
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Natural selection - Simple English Wikipedia, the free encyclopedia
Evolution - Wikipedia
网页Evolution by natural selection is established by observable facts about living organisms: (1) more offspring are often produced than can possibly survive; (2) traits vary among individuals with respect to their …
Natural Selection - National Geographic Society
网页2023年10月19日 · Learn how natural selection is the process of adaptation and evolution through genetic variation and inheritance. Explore the evidence, examples, and history of natural selection with …
On the Origin of Species - Wikipedia
网页On the Origin of Species (or, more completely, On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life) [3] is a work of scientific literature by Charles Darwin …
The Genetical Theory of Natural Selection - Wikipedia
Negative selection (natural selection) - Wikipedia
Natural Selection (manuscript) - Wikipedia
What is natural selection? - Natural History Museum
网页Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change …