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. 145
... descendants ; for these will have the best chance of seizing on new and widely different places in the polity of nature : hence in the diagram I have chosen the extreme species ( A ) , and the nearly extreme species ( I ) , as those ...
... descendants ; for these will have the best chance of seizing on new and widely different places in the polity of nature : hence in the diagram I have chosen the extreme species ( A ) , and the nearly extreme species ( I ) , as those ...
Стр. 147
... descendants to this late stage of descent . The new species in our diagram descended from the original eleven species , will now be fifteen in number . Owing to the divergent tendency of natural selection , the extreme amount of ...
... descendants to this late stage of descent . The new species in our diagram descended from the original eleven species , will now be fifteen in number . Owing to the divergent tendency of natural selection , the extreme amount of ...
Стр. 150
... descendants will mainly lie between the larger groups which are all trying to increase in number . One large group will slowly conquer another large group , reduce its numbers , and thus lessen its chance of further varia- tion and ...
... descendants will mainly lie between the larger groups which are all trying to increase in number . One large group will slowly conquer another large group , reduce its numbers , and thus lessen its chance of further varia- tion and ...
Содержание
CHAPTER I | 5 |
VARIATION UNDER NATURE | 51 |
Its bearing on natural selectionThe term used in a wide sense | 75 |
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The Origin of Species by Means of Natural Selection: Or, the Preservation of ... Charles Darwin Недоступно для просмотра - 2016 |
The Origin of Species by Means of Natural Selection: Or the Preservation of ... Charles Darwin Недоступно для просмотра - 2018 |
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