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On Growth and Form is a book by the Scottish mathematical biologist D'Arcy Wentworth Thompson (1860–1948). The book is long – 793 pages in the first edition of 1917, 1116 pages in the second edition of 1942.
Sir D'Arcy Wentworth Thompson CB FRS FRSE (2 May 1860 – 21 June 1948) was a Scottish biologist, mathematician and classics scholar.He was a pioneer of mathematical and theoretical biology, travelled on expeditions to the Bering Strait and held the position of Professor of Natural History at University College, Dundee for 32 years, then at St Andrews for 31 years.
In his 1917 book On Growth and Form, D'Arcy Thompson illustrates the geometric transformation of one fish's body form into another with a 20° shear mapping.He does not discuss the evolutionary causes of such a structural change, and has accordingly been suspected of vitalism.
On Growth and Form. Cambridge, UK: Cambridge University Press. Alan M. Turing. “The Chemical Basis of Morphogenesis.” Philosophical Transactions of the Royal Society B August 14, 1952, 237, pp. 37–72. René Thom. Stabilité Structurelle et Morphogenèses: Essai d’une Théorie Générale des Modèles.
On Growth and Form, D'Arcy Wentworth Thompson, John Tyler Bonner (editor), Cambridge University Press; Abridged edition, July 31, 1992, ISBN 0-521-43776-8; Why Size Matters: From Bacteria to Blue Whales, John Tyler Bonner, Princeton University Press, September 13, 2006, ISBN 0-691-12850-2
The principle was raised to an axiom of biology by D'Arcy Wentworth Thompson, in On Growth and Form, 1917; it has found dependable use in paleontology, where the measurements of a fossil jawbone or a single vertebra offer a close approximation of the size of a long-extinct animal, in cases where comparable animals are already known.
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L-form bacteria, also known as L-phase bacteria, L-phase variants or cell wall-deficient bacteria (CWDB), are growth forms derived from different bacteria. They lack cell walls . [ 1 ] Two types of L-forms are distinguished: unstable L-forms , spheroplasts that are capable of dividing, but can revert to the original morphology, and stable L ...