| 1905 - 588 páginas
...even if some of them are not. Darwin defined natural selection as follows : ' This preservation of favorable individual differences and variations, and the destruction of those which are injurious, I have called natural selection, or the sur*I do not, of course, mean to imply that any one of the... | |
| Peter Kivy - 1993 - 388 páginas
...the individuals who possess them will be less likely to reproduce. "This preservation of favourable individual differences and variations, and the destruction of those which are injurious," says Darwin, "I have called Natural Selection, or the Survival of the Fittest,"2 But with regard to... | |
| Jack E. Staub - 1994 - 390 páginas
...form". He goes on to define natural selection or the survival of the fittest as the "... preservation of favorable individual differences and variations, and the destruction of those which are injurious, ...." Thus two ideas central to Darwinian thought are survival and fitness. Natural selection implies... | |
| Hugh LaFollette, Niall Shanks - 1996 - 300 páginas
...1972:39). Darwin claims this mechanism is the primary engine of evolution. This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest. Variations neither useful nor injurious... | |
| John H. Perkins - 1997 - 352 páginas
...Bailey moved directly to link Darwinian evolution with applied plant breeding: "This preservation of favorable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection of the Survival of the Fittest." This is the philosophy which was propounded... | |
| Owen Goldin, Patricia Kilroe - 1997 - 276 páginas
...variation in the least degree injurious would be rigidly destroyed. This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest. Variations neither useful nor injurious... | |
| Robert W. Allard - 1999 - 274 páginas
...that selection is the principal agent of change. In the Origin of Species he wrote: Preservation of favorable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest. At the commencement of my observations... | |
| Werner R. Loewenstein - 1999 - 385 páginas
...classical one. The classical concept is best summarized in Darwin's own words: This preservation of favorable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest. Here selection ensues by the destruction... | |
| George C. Denniston, Frederick Mansfield Hodges, Marilyn Fayre Milos - 2007 - 538 páginas
...by the fossil record and among living organisms.37 Darwin states, "This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest." In addition to natural selection,... | |
| Joseph Lopreato, Timothy Alan Crippen - 2001 - 348 páginas
...plant breeding, namely "artificial selection." He therefore concluded: "This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection" (Darwin 1859: 88 — emphasis added). We may now summarize the core... | |
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