Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1890 - Всего страниц: 351 |
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Стр. 7
... tends to act on its sexual elements . We see this in the inheritance of newly acquired modifications , such as those from the increased use or disuse of a part , and even from mutilations if followed by disease . We have abundant ...
... tends to act on its sexual elements . We see this in the inheritance of newly acquired modifications , such as those from the increased use or disuse of a part , and even from mutilations if followed by disease . We have abundant ...
Стр. 9
... tend to spread . PRACTICAL APPLICATION OF THESE VIEWS . Page 458 . Under a practical point of view , agricult- urists and horticulturists may learn something from the conclusions at which we have arrived . Firstly , we see that the ...
... tend to spread . PRACTICAL APPLICATION OF THESE VIEWS . Page 458 . Under a practical point of view , agricult- urists and horticulturists may learn something from the conclusions at which we have arrived . Firstly , we see that the ...
Стр. 12
... tend to counterbalance any evil from marriages between healthy and somewhat closely related persons . DEVELOPMENT OF THE TWO SEXES IN PLANTS . Under a theoretical point of view it is some Page 461 . gain to science to know that ...
... tend to counterbalance any evil from marriages between healthy and somewhat closely related persons . DEVELOPMENT OF THE TWO SEXES IN PLANTS . Under a theoretical point of view it is some Page 461 . gain to science to know that ...
Стр. 17
... tend to supplant the females . We may therefore infer that much more vital force is expended in the pro- duction of ovules and fruit than in the production of pollen . The Differ- ent Forms of Flower , page 345 . CAUSES OF STERILITY ...
... tend to supplant the females . We may therefore infer that much more vital force is expended in the pro- duction of ovules and fruit than in the production of pollen . The Differ- ent Forms of Flower , page 345 . CAUSES OF STERILITY ...
Стр. 64
... tends to reappear in the offspring at a corresponding age , though sometimes earlier . In many cases this could not ... tend to appear in the offspring at the same period at which it first appeared in the parent . I believe this rule to ...
... tends to reappear in the offspring at a corresponding age , though sometimes earlier . In many cases this could not ... tend to appear in the offspring at the same period at which it first appeared in the parent . I believe this rule to ...
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Darwinism Stated by Darwin Himself: Characteristic Passages from the ... Charles Darwin Полный просмотр - 1884 |
Darwinism stated by Darwin himself: Characteristic passages from the ... Charles Darwin Ограниченный просмотр - 2023 |
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