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Goldschmidt was the first scientist to use the term "hopeful monster". He thought that small gradual changes could not bridge the divide between microevolution and macroevolution. In his book The Material Basis of Evolution (1940), he wrote.
- Saltation (biology)
His ideas about macromutations became known as the hopeful...
- Saltation (biology)
His ideas about macromutations became known as the hopeful monster hypothesis which is considered a type of saltational evolution. [21] Goldschmidt's thesis however was universally rejected and widely ridiculed within the biological community, which favored the neo-Darwinian explanations of R.A. Fisher , J. B. S. Haldane and Sewall ...
In 1940, Richard Goldschmidt again argued for single-step speciation by macromutation, describing the organisms thus produced as "hopeful monsters", earning widespread ridicule. In 1987, Masatoshi Nei argued controversially that evolution was often mutation-limited.
Il nome hopefulmonster viene dalla teoria neo-darwiniana del genetista tedesco Richard Goldschmidt, poi ripresa dal biologo statunitense Stephen Jay Gould. Si tratta degli hopeful monsters, ovvero i salti evolutivi, passaggi intermedi, piccoli mostri prima di passare alla loro reale natura.
23 mag 2018 · *hopeful monster* An individual which carries a macromutation [1] that is of no benefit to that individual (i.e. the individual is a monster) but that may prove beneficial to one of its descendants if it undergoes further, but relatively minor, evolutionary change (i.e. the monster is hopeful).
1 gen 2003 · He called the results of these developmental macromutations “hopeful monsters” because they were the embodiment of large phenotypic changes that had the potential to succeed as new species.
27 lug 2019 · In Goldschmidt’s view, the result of macromutations was mostly lethal to the organism, which he called “monsters,” but in very rare circumstances, it was able to produce a new species with large changes, which he dubbed “hopeful monsters.”
