orthogenesis वाक्य
उदाहरण वाक्य
मोबाइल
- The Irish elk was a prime example of orthogenesis because it had evolved from a smaller ancestor with smaller antlers.
- Orthogenesis was popular among some paleontologists, who believed that the fossil record showed a gradual and constant unidirectional change.
- Baer was also a believer in a teleological force in nature which has been compared to a form of evolutionary orthogenesis.
- Much like Othenio Abel, Hennig was a supporter of orthogenesis theories of evolution as was his assistant, Karl Beurlen.
- American paleontologist George Gaylord Simpson ( 1953 ) in an attack on orthogenesis described it as " the mysterious inner force ".
- In 1930, the American zoologist Austin Hobart Clark attempted to modify orthogenesis with his theory of " zoogenesis ".
- Orthogenesis was particularly popular among some paleontologists, who believed that the fossil record showed patterns of gradual and constant unidirectional change.
- Other examples of orthogenesis include saber tooth tigers teeth growing to unbearable sizes or oysters coiling their valves into itself until it suffocated.
- Classic proponents of orthogenesis rejected the theory of natural selection as the organizing mechanism in evolution for a rectilinear model of directed evolution.
- Stephen Jay Gould wrote that Whitman did not believe in Lamarckism, Darwinism or mutationism, instead Whitman was an advocate of orthogenesis.
- Orthogenesis was the hypothesis that life has an innate tendency to change, in a unilinear fashion, towards ever-greater perfection.
- He differed to the modern synthesis in his acceptance of other mechanisms of evolution such as the inheritance of acquired characteristics and orthogenesis.
- Orthogenesis has been described as an " anti-Darwinian " evolutionary theory because of its stance on the Darwinian mechanism of natural selection.
- The Russian biologist Karl Ernst von Baer had believed in a teleological force in nature which has been compared to a form of orthogenesis.
- Those who accepted this idea, however, did not necessarily accept that the mechanism driving orthogenesis was teleological ( goal-directed ).
- In the 1950s the German paleontologist Otto Schindewolf developed a theory of orthogenesis, which claimed that variation tends to move in a predetermined direction.
- In the meantime, a variety of theories of inheritance ( based on pangenesis, orthogenesis, or other mechanisms ) were debated and investigated vigorously.
- However, in the 1930s, orthogenesis was disproved by Darwinians led by Julian Huxley, who noted that antler size was relative to body size.
- This theory, too, was countered by Stephen Jay Gould, as he deemed the allometry theory to be very similar to the orthogenesis theory.
- His theory of orthogenesis ( straight-line evolution ) and eventual decay, claimed to be embedded within a cyclical view of the evolutionary process.
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