| 释义 |
saltationist, a. and n. Biol.|sælˈteɪʃənɪst|
[f. saltation + -ist.]
A. adj. Of or pertaining to saltationism.
B. n. One who supports or advocates saltationism.
1954R. A. Fisher in J. S. Huxley et al. Evolution as Process 93 Darwin's criticism of the saltationist theory of M. Mivart. 1978Sci. Amer. Sept. 44/1 They were essentialists and saltationists, and they looked on mutation as the probable driving force in evolution. 1980Nature 4 Dec. 430/1 T. H. Huxley himself was unable fully to accept Darwin's gradualism, and preferred the saltationist camp.
So salˈtationism, the theory that new species arise suddenly as a result of major mutations.
1975Kelly & McGrath Biology vii. 213/2 DeVries..insisted that a new species could arise by the introduction of a single mutation in an organism. His theory, called saltationism.., has been disproved, with one exception. 1978Sci. Amer. Sept. 41/1 Saltationism was also popular with such biologists as Hugo De Vries, one of the rediscoverers of Gregor Mendel's laws of inheritance. 1979M. Ruse Darwinian Revolution ix. 249 There were scientific reasons why many favored saltationism. |