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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... species as only strongly - marked and well - defined varieties , I was led to anticipate that the species of the larger genera in each country would oftener present varieties , than the species of the smaller genera ; for wherever many ...
... species of the same genus have been formed , or where , if we may use the expression , the manufactory of species has been active , we ought gene- rally to find the ... species or varieties . Now Fries 56 CHAP . II . SPECIES OF LARGE GENERA.
... species ( A ) and all the earlier varieties will have become extinct , having been replaced by eight new species ( a 14 to m1⁄44 ) ; and ( I ) will have been replaced by six ( n14 to z14 ) new species . But we may go further than this ...
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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 |