Darwinism and Lamarckism, Old and New: Four LecturesDuckworth, 1899 - 169 стор. |
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Сторінка 32
... sterility between different species was a provision intended from the begin- ning to prevent confusion between all kinds of plants and animals . It is now known that the assumption of sterility between individuals of different species ...
... sterility between different species was a provision intended from the begin- ning to prevent confusion between all kinds of plants and animals . It is now known that the assumption of sterility between individuals of different species ...
Сторінка 53
... sterility of hybrids ; and even that had broken down before the records of the numerous zoological and botanical gardens . No- thing could be done except to cover the retreat by raising a cloud of futile objections ; and these soon ...
... sterility of hybrids ; and even that had broken down before the records of the numerous zoological and botanical gardens . No- thing could be done except to cover the retreat by raising a cloud of futile objections ; and these soon ...
Сторінка 100
... sterility must have commenced before the two forms could have been produced , and , there- fore , before there were any mongrels . In other words , certain individuals must have been more or less physiologically isolated from each other ...
... sterility must have commenced before the two forms could have been produced , and , there- fore , before there were any mongrels . In other words , certain individuals must have been more or less physiologically isolated from each other ...
Сторінка 102
... sterility be- tween individuals of different species . So far as our present experience goes , it seems that com- plete fertility between individuals of different species is rare , and that nearly all are absolutely infertile . No ...
... sterility be- tween individuals of different species . So far as our present experience goes , it seems that com- plete fertility between individuals of different species is rare , and that nearly all are absolutely infertile . No ...
Сторінка 103
... sterility between species was not absolute , as had previously been supposed ; and therefore it was not a fatal objection to the theory of the development of species . But although he did this he failed to give any satisfactory explana ...
... sterility between species was not absolute , as had previously been supposed ; and therefore it was not a fatal objection to the theory of the development of species . But although he did this he failed to give any satisfactory explana ...
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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