synthetic theory of evolution
Quick Summary
The synthetic theory of evolution, also known as the modern evolutionary synthesis, integrates genetics with Charles Darwin's theory of natural selection. This theory emerged in the 1920s and 1930s, building upon the rediscovery of Gregor Mendel's work on heredity. It explains that evolution occurs through genetic changes in populations.
Key concepts include:
* Mutations: Spontaneous alterations in genes that introduce new genetic variation. These random changes are the primary source of genetic diversity.1
* Natural Selection: The process where individuals with traits better suited to their environment are more likely to survive and reproduce, passing those advantageous genes to offspring.21
* Genetic Drift: Random fluctuations in gene frequencies within a population, particularly significant in small populations.2
The synthetic theory posits that cumulative small variations, explained by Mendelian genetics, can lead to major evolutionary changes over time. This framework unified various biological disciplines and became the cornerstone of evolutionary biology.3
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philosophy of biologyThe species problem…of the founders of the synthetic theory of evolution (see above Form and function), especially the Ukrainian-born American geneticist Theodosius Dobzhansky (1900–75) and the German-born American biologist Ernst Mayr (1904–2005). However, it encounters difficulties with asexual organisms and with individual
Read More…of the founders of the synthetic theory of evolution (see above Form and function), especially the Ukrainian-born American geneticist Theodosius Dobzhansky (1900–75) and the German-born American biologist Ernst Mayr (1904–2005). However, it encounters difficulties with asexual organisms and with individual
Read More- philosophy of biologyThe structure of evolutionary theory
…fact the formulators of the synthetic theory of evolution used population genetics in a very casual and non-formal way to achieve their ends. As an ornithologist and systematicist, Ernst Mayr, in his Systematics and the Origin of Species (1942), hardly thought of his work as deducible from the principles of…
Read More…fact the formulators of the synthetic theory of evolution used population genetics in a very casual and non-formal way to achieve their ends. As an ornithologist and systematicist, Ernst Mayr, in his Systematics and the Origin of Species (1942), hardly thought of his work as deducible from the principles of…
Read More - philosophy of biologyTaxonomy
With the development of the synthetic theory of evolution in the early 20th century, classification and phylogeny-tracing ceased to be pursued for their own sake, but the theoretical and philosophical underpinnings of classification, known as systematics, became a topic of great interest.
Read MoreWith the development of the synthetic theory of evolution in the early 20th century, classification and phylogeny-tracing ceased to be pursued for their own sake, but the theoretical and philosophical underpinnings of classification, known as systematics, became a topic of great interest.
Read More