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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... breeds several truly- inherited sub - breeds , or species as he might have called them , could be shown him . Great as the differences are between the breeds of pigeons , I am fully convinced that the common opinion of naturalists is ...
... breeds and some apparently truly wild breeds have , besides the two black bars , the wings chequered with black . These several marks do not occur together in any other species of the whole family . Now , in every one of the domestic breeds ...
... breeds . Secondly , although an English carrier or short - faced tumbler differs immensely in cer- tain characters from the rock - pigeon , yet by comparing the several sub - breeds of these breeds , more especially those brought from ...
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VARIATION UNDER DOMESTICATION | 7 |
VARIATION UNDER NATURE | 44 |
STRUGGLE FOR EXISTENCE | 60 |
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An Introduction to Behavioural Ecology Nicholas B. Davies,John R. Krebs Недоступно для просмотра - 1993 |