On the Origin of SpeciesHarvard University Press, 2003 - Всего страниц: 553 It is now generally recognized that the publication of Darwin's Origin of Species in 1859 not only decisively altered the basic concepts of biological theory but had a profound and lasting influence on social, philosophic, and religious thought. This work is rightly regarded as one of the most important books ever printed. |
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... never destroyed , and could be ensured to germi- nate in a fitting place . So that in all cases , the average number of any animal or plant depends only indirectly on the number of its eggs or seeds . In looking at Nature , it is most ...
... Never- theless , according to my view , varieties are species in the process of formation , or are , as I have called them , incipient species . How , then , does the lesser difference between varieties become augmented into the greater ...
... never been observed in the nests of F. sanguinea . The slaves are black and not above half the size of their red masters , so that the contrast in their appearance is very great . When the nest is slightly disturbed , the slaves ...
Содержание
VARIATION UNDER DOMESTICATION | 7 |
VARIATION UNDER NATURE | 44 |
STRUGGLE FOR EXISTENCE | 60 |
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Publications of the Biological Services Program Biological Services Program (U.S.) Полный просмотр - 1978 |
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An Introduction to Behavioural Ecology Nicholas B. Davies,John R. Krebs Недоступно для просмотра - 1993 |