...individuals of a species, in their infinitely complex relations to other organic beings and to the physical conditions of life, will tend to the preservation...and will generally be inherited by the offspring" (1970, 39). For Darwin, this mechanism is the primary engine of evolution: This preservation of favorable...

...variations, however slight ... if they be in any way profitable to the individuals of a species . . . will tend to the preservation of such individuals, and will generally be inherited by the offspring ... I have called this principle, by which each variation, if useful, is preserved, by the term Natural...

...whatever cause proceeding, if they be in any degree profitable to the individuals of a species . . . will tend to the preservation of such individuals, and will generally be inherited by the offspring".5 If artificial selection can effect such great changes in so short a time, Darwin reasoned,...

...whatever cause proceeding, if they be in any degree profitable to the individuals of a species . . . will tend to the preservation of such individuals,...offspring, also, will thus have a better chance of surviving.15 Having advanced these proposals on the evolution of life, however, Darwin does not conjecture...

...principles; dit werk handelt voornamelijk over evolutie. 46. (§ 85) „Owing to the struggle for life, variations, however slight, and from whatever cause...also, will thus have a better chance of surviving. „Can we doubt (remembering that many more individuals are born than can possibly survive) that individuals...