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C. H. Waddington. Conrad Hal Waddington CBE FRS FRSE (8 November 1905 – 26 September 1975) was a British developmental biologist, paleontologist, geneticist, embryologist and philosopher who laid the foundations for systems biology, epigenetics, and evolutionary developmental biology . Although his theory of genetic assimilation had a ...
Darwinism. Charles Darwin in 1868. Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin (1809–1882) and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce.
The Maturational Theory of child development was introduced in 1925 [ 1] by Dr. Arnold Gesell, an American educator, pediatrician and clinical psychologist whose studies focused on "the course, the pattern and the rate of maturational growth in normal and exceptional children" (Gesell 1928). [ 2] Gesell carried out many observational studies ...
Following the inception of Charles Darwin 's theory of natural selection in 1838, the development of Darwin's theory to explain the "mystery of mysteries" of how new species originated was his "prime hobby" in the background to his main occupation of publishing the scientific results of the Beagle voyage. He was settling into married life, but ...
Life history theory ( LHT) is an analytical framework [ 1] designed to study the diversity of life history strategies used by different organisms throughout the world, as well as the causes and results of the variation in their life cycles. [ 2] It is a theory of biological evolution that seeks to explain aspects of organisms' anatomy and ...
On August 11, 1999, by a 6–4 vote the Kansas State Board of Education changed their science education standards to remove any mention of "biological macroevolution, the age of the Earth, or the origin and early development of the universe," so that evolutionary theory no longer appeared in statewide standardized tests and "it was left to the ...
Developmental systems theory ( DST) is an overarching theoretical perspective on biological development, heredity, and evolution. [ 1] It emphasizes the shared contributions of genes, environment, and epigenetic factors on developmental processes. DST, unlike conventional scientific theories, is not directly used to help make predictions for ...
The Extended Evolutionary Synthesis ( EES) consists of a set of theoretical concepts argued to be more comprehensive than the earlier modern synthesis of evolutionary biology that took place between 1918 and 1942. The extended evolutionary synthesis was called for in the 1950s by C. H. Waddington, argued for on the basis of punctuated ...