Studies in History of Biology, Выпуск 3William R. Coleman, Camille Limoges Johns Hopkins University Press, 1979 |
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... variations found within natural populations . Like Darwin , they maintained that natural selection acted on these slight , individual or continuous variations , rather than on large - scale variations such as " sports " or ...
... variations found within natural populations . Like Darwin , they maintained that natural selection acted on these slight , individual or continuous variations , rather than on large - scale variations such as " sports " or ...
Стр. 202
... variations . Distribution curves for natural populations reflect both inherited and environmental variations . Selection can distinguish between these types of variations — any single population may consist of several discrete pure ...
... variations . Distribution curves for natural populations reflect both inherited and environmental variations . Selection can distinguish between these types of variations — any single population may consist of several discrete pure ...
Стр. 203
... variations within a population . In other words , selection was a negative factor in evolution only if it was limited to sorting out the variations that were already present in a population from the outset . But if new variations were ...
... variations within a population . In other words , selection was a negative factor in evolution only if it was limited to sorting out the variations that were already present in a population from the outset . But if new variations were ...
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The Vicissitudes | 23 |
Animal Heat as a Biological | 67 |
Louis Agassiz and the Species Question MARY PICKARD WINSOR | 89 |
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acquired characters Agassiz animal heat appeared asexual believed Bergmann Bergmann's Rule biological biologists breeding catastrophists cells century Charles Darwin concept Darwin Darwinian discussion Dobzhansky Ernst Mayr Essay eugenics evidence evolution evolutionary Ewart experimental experimentalists experiments explain F. B. Sumner fact factors fertilization fish forms gene pool geneticists genotype genotype-phenotype distinction genus geographic isolation geographical races geology Göttingen hereditary heredity homoiotherms Ibid ideas important individual inheritance of acquired Johannsen's Journal Kol'tsov Leuckart Lord Morton's Louis Agassiz Lyell male Mayr's Mendel mutations natural populations natural selection naturalists offspring organism Origin of Species Owen parthenogenesis Peromyscus phenomenon phenotype phyletic physiology plants population genetics principle problem produced published role scientific Scripps sexual reproduction Siebold Soviet specimens spermatozoa Steenstrup subspecies sympatric speciation systematics taxonomic telegony temperature term gene fund term gene pool theory tion uniformitarianism University variability variations Wagner Wärmeökonomie Weismann Zoology