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Ernst Mayer (24 June 1796 [1] – 21 January 1844) was a German sculptor in the classical style. He was a pupil of Antonio Isopi and worked for Leo von Klenze , mainly in Munich where in 1830 he became Professor of Sculpture at the Polytechnic, now the Technical University .
Ernst Walter Mayr (/ ˈ m aɪər / MYRE, German: [ɛʁnst ˈmaɪɐ]; 5 July 1904 – 3 February 2005) [1] [2] was a German-American evolutionary biologist. He was also a renowned taxonomist , tropical explorer, ornithologist , philosopher of biology , and historian of science . [ 3 ]
In 1941, Edgar Anderson (whose work on hybridization in the genus Iris had interested Stebbins since they met in 1930) and Ernst Mayr co-presented the lecture series and Mayr later published his lectures as Systematics and the Origin of Species. In 1946, Stebbins was invited on Dobzhansky's recommendation to present the prestigious lectures.
This concept Ernst Mayr proposes here is now commonly referred to as the biological species concept. The biological species concept defines a species in terms of biological factors such as reproduction , taking into account ecology, geography, and life history; it remains an important and useful idea in biology, particularly for animal ...
Founder effect: The original population (left) could give rise to different founder populations (right). In population genetics, the founder effect is the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population.
Ernst Mayr wrote that a survey of evolutionary literature and biology textbooks showed that as late as 1930 the belief that natural selection was the most important factor in evolution was a minority viewpoint, with only a few population geneticists being strict selectionists.
The book, Mayr notes in the Forward, is an attempt "to strengthen the bridge between biology and philosophy, and point to the new direction in which a new philosophy of biology will move." Reviews [ edit ]
For some time it was difficult to prove that sympatric speciation was possible, because it was impossible to observe it happening. [3] It was believed by many, and championed by Ernst Mayr, that the theory of evolution by natural selection could not explain how two species could emerge from one if the subspecies were able to interbreed. [29]