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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... genus have been formed , the species of that genus present a number of varieties , that is of incipient species , beyond the average . It is not that all large genera are now varying much , and are thus increasing in the number of their ...
... genus becoming , by simple variation , striped on the legs like a zebra , or striped on the shoulders like an ass . In the horse we see this tendency strong whenever a dun tint appears - a tint which approaches to that of the general ...
... genus with the parent A ; or those from I , with the parent I. But the existing genus F " may be supposed to have been but slightly modified ; and it will then rank with the parent - genus F ; just as some few still living organic ...
Содержание
VARIATION UNDER DOMESTICATION | 7 |
VARIATION UNDER NATURE | 44 |
STRUGGLE FOR EXISTENCE | 60 |
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Не показаны другие разделы: 14
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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 |