The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life, Volumen1AMS Press, 1972 - 479 páginas 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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Página x
... modified . On the modification of the eye . Transitions through the acceleration or retardation of the period of reproduction . The account of the electric organ of fishes added to . Analogical resemblance between the eyes of Cepha ...
... modified . On the modification of the eye . Transitions through the acceleration or retardation of the period of reproduction . The account of the electric organ of fishes added to . Analogical resemblance between the eyes of Cepha ...
Página 143
... modification . Nor do I suppose that the most divergent varieties are invariably preserved : a medium form may often long endure , and may or may not produce more than one modified descendant ; for natural selection will always act ...
... modification . Nor do I suppose that the most divergent varieties are invariably preserved : a medium form may often long endure , and may or may not produce more than one modified descendant ; for natural selection will always act ...
Página 265
... modified at the same time through variation and natural selection ? But there is no necessity for supposing that all the parts of any being have been simultaneously modified . The most striking modifications , excellently adapted for ...
... modified at the same time through variation and natural selection ? But there is no necessity for supposing that all the parts of any being have been simultaneously modified . The most striking modifications , excellently adapted for ...
Contenido
CHAPTER I | 5 |
VARIATION UNDER NATURE | 51 |
Its bearing on natural selectionThe term used in a wide sense | 75 |
Derechos de autor | |
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The Origin of Species by Means of Natural Selection: Or, the Preservation of ... Charles Darwin Sin vista previa disponible - 2016 |
On the Origin of Species by Means of Natural Selection Charles Darwin Sin vista previa disponible - 2016 |
The Origin of Species by Means of Natural Selection: Or the Preservation of ... Charles Darwin Sin vista previa disponible - 2018 |
Términos y frases comunes
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