The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life, Том 1AMS Press, 1972 - Всего страниц: 479 This is a reproduction of the original artefact. Generally these books are created from careful scans of the original. This allows us to preserve the book accurately and present it in the way the author intended. Since the original versions are generally quite old, there may occasionally be certain imperfections within these reproductions. We're happy to make these classics available again for future generations to enjoy! |
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Стр. 11
... plants have pollen utterly worthless , in the same condition as in the most sterile hybrids . When , on the one hand , we see domesticated animals and plants , though often weak and sickly , breeding freely under confinement ; and when ...
... plants have pollen utterly worthless , in the same condition as in the most sterile hybrids . When , on the one hand , we see domesticated animals and plants , though often weak and sickly , breeding freely under confinement ; and when ...
Стр. 138
... plants , and these belonged to eighteen genera and to eight orders , which shows how much these plants differed from each other . So it is with the plants and insects on small and uniform islets : also in small ponds of fresh water ...
... plants , and these belonged to eighteen genera and to eight orders , which shows how much these plants differed from each other . So it is with the plants and insects on small and uniform islets : also in small ponds of fresh water ...
Стр. 308
... plants move after being shaken ; and with climbing plants it is , as we know , only during the early stages of growth that the foo . - stalks and tendrils are sensitive . It is scarcely possible that the above slight movements , due to ...
... plants move after being shaken ; and with climbing plants it is , as we know , only during the early stages of growth that the foo . - stalks and tendrils are sensitive . It is scarcely possible that the above slight movements , due to ...
Содержание
CHAPTER I | 5 |
VARIATION UNDER NATURE | 51 |
Its bearing on natural selectionThe term used in a wide sense | 75 |
Авторские права | |
Не показаны другие разделы: 5
Часто встречающиеся слова и выражения
acquired adapted advantage allied analogous animals and plants appear Asa Gray beak become bees believe birds breeds caudicle cause cells characters climate closely colour common crossed cuckoo degree developed difficulty distinct species disuse domestic animals domestic races doubt effects eggs existence extinct extremely facts favourable females flowers forms Fritz Müller genera genus giraffe gradations greater number groups habits Hence hermaphrodites hive-bee important improved increase in number individual differences inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less likewise males manner Melipona Mivart natural selection naturalists nearly nest occasionally offspring organisation organs origin Origin of Species perfect period pigeons pollen pollen-grains present preserved principle probably produced progenitor quadrupeds rank Red Grouse relation remarked resemble rock-pigeon seeds sexes sexual sexual selection slight stamens striped structure struggle supposed swimbladder tend tendency tion transitional tree variability variations varieties vary widely wings young