Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1890 - Всего страниц: 351 |
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Стр. ix
... Sexes in Plants Why the Sexes have been reseparated Comparative Fertility of Male and Female Plants Effect of Climate on Reproduction Causes of Sterility among Plants An " Ideal Type " or Inevitable Modification Special Adaptations to a ...
... Sexes in Plants Why the Sexes have been reseparated Comparative Fertility of Male and Female Plants Effect of Climate on Reproduction Causes of Sterility among Plants An " Ideal Type " or Inevitable Modification Special Adaptations to a ...
Стр. xiii
... Sexes created by Sexual Selection How Woman could be made to reach the Standard of Man . " Characteristic Selfishness of Man " No Universal Standard of Beauty among Mankind 242 243 246 . 247 248 Development of the Beard Development of ...
... Sexes created by Sexual Selection How Woman could be made to reach the Standard of Man . " Characteristic Selfishness of Man " No Universal Standard of Beauty among Mankind 242 243 246 . 247 248 Development of the Beard Development of ...
Стр. 12
... SEXES IN PLANTS . Under a theoretical point of view it is some Page 461 . gain to science to know that numberless ... sexes been developed , and why do males exist which can not themselves produce offspring ? The an- swer. 12 DARWINISM ...
... SEXES IN PLANTS . Under a theoretical point of view it is some Page 461 . gain to science to know that numberless ... sexes been developed , and why do males exist which can not themselves produce offspring ? The an- swer. 12 DARWINISM ...
Стр. 13
... sexes . The It is a different question why the two sexes are some- times combined in the same individual , and are sometimes separated . As with many of the lowest plants and ani- mals the conjugation of two individuals , which are ...
... sexes . The It is a different question why the two sexes are some- times combined in the same individual , and are sometimes separated . As with many of the lowest plants and ani- mals the conjugation of two individuals , which are ...
Стр. 14
... SEXES HAVE BEEN RESEPARATED . It is a more difficult problem why some Page 463 . plants , and apparently all the higher animals , after becoming hermaphrodites , have since had their sexes reseparated . This separation has been ...
... SEXES HAVE BEEN RESEPARATED . It is a more difficult problem why some Page 463 . plants , and apparently all the higher animals , after becoming hermaphrodites , have since had their sexes reseparated . This separation has been ...
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Часто встречающиеся слова и выражения
acid acquired action adapted admit allied animals apes appear become believe birds body breeds cause character climate closely compared cotyledons crossed degree descended developed distinct species disuse domestic doubt early effects eggs embryo existence extinct eyes fact female fertilization forms gemmules genera genus geotropism Glacial habits hairs hermaphrodites highly horses increase individuals inhabitants inherited insects instance instincts islands kinds labellum lancelet larvæ leaves less living lower animals Malaxis paludosa males mammals manner mental millimetre modified monkeys movements muscles natural selection naturalists observed occasionally offspring organs Origin of Species ovules papillæ parent peculiar period pigeon plants points pollen pollinium possess present prey probably produced progenitors Quadrumana quadrupeds races radicles remarkable resemble rudimentary savages seedlings seeds seems sexes sexual elements sexual selection slight structure suppose surface tend tendency tion transmitted utricle variability variations varieties various vertebræ whole wild worms young