Darwinism and Lamarckism, Old and New: Four LecturesDuckworth, 1899 - 169 стор. |
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Сторінка 7
... common eleven years ago , is still held by some naturalists ; but it has almost vanished before the accumulating testimony of paleontology , that several of the lower organisms Introduction 7 Idea of an internal tendency to progression.
... common eleven years ago , is still held by some naturalists ; but it has almost vanished before the accumulating testimony of paleontology , that several of the lower organisms Introduction 7 Idea of an internal tendency to progression.
Сторінка 31
... common ancestors . " We reckon , " he says , " just so many species as there were forms created in the beginning " ; and this definition was almost universally accepted by naturalists . It was , of course , allowed that no direct proof ...
... common ancestors . " We reckon , " he says , " just so many species as there were forms created in the beginning " ; and this definition was almost universally accepted by naturalists . It was , of course , allowed that no direct proof ...
Сторінка 33
... common properties , and producing without con- straint a fertile progeny . " But no such definite boundary could be traced for the larger groups , such as genera , etc. It was generally agreed that , while species were natural groups ...
... common properties , and producing without con- straint a fertile progeny . " But no such definite boundary could be traced for the larger groups , such as genera , etc. It was generally agreed that , while species were natural groups ...
Сторінка 35
... common stock , constitute a species . It is a particular provision for preventing the blending of species that hybrids are always barren . Genera are groups of species related by community of structure in all essential respects ...
... common stock , constitute a species . It is a particular provision for preventing the blending of species that hybrids are always barren . Genera are groups of species related by community of structure in all essential respects ...
Сторінка 36
... common ancestors , but it does not follow that this holds good for different genera . " That is , they would allow that the lion , tiger , leopard , and all the cat genus , have had a common origin , but they deny that cats and dogs are ...
... common ancestors , but it does not follow that this holds good for different genera . " That is , they would allow that the lion , tiger , leopard , and all the cat genus , have had a common origin , but they deny that cats and dogs are ...
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Darwinism and Lamarckism, Old and New: Four Lectures Frederick Wollaston Hutton Повний перегляд - 1899 |
Darwinism and Lamarckism, Old and New: Four Lectures Frederick Wollaston Hutton Повний перегляд - 1899 |
Darwinism and Lamarckism Old and New Frederick Wollaston Hutton Попередній перегляд недоступний - 2014 |
Загальні терміни та фрази
acquired characters action of external action of selection adapted Ampelopsis animals and plants arise artificial selection become biology birds brought called cause cells colour compensation of growth congenital consequently Darwin definite variation despotism direct action divergent evolution doubt elongated environment evidence existence explain external conditions extrinsic selection facts favour flatfish flowers G. H. Lewes gemmules genera genus germ-cells groups Henslow Herbert Spencer hypothesis idea important indefinite infertility inherited insects island kinetogenesis Lamarck Lamarckians large number living means mental variations modification Moritz Wagner movements nation natural selection naturalists Neo-Lamarckians notochord number of individuals offspring opinion organic evolution organisation Origin of Species Pangenesis physical Physiogenesis plants and animals principle of compensation principle of selection produced Professor progress Radiolarians reason result says science of history seems sterility structure suppose take place theory tion transmission transmitted tribe use-inheritance varieties vertebræ Weismann Zealand