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 70
... genus have been formed , the species of that genus present a number of varieties , that is of incipient species , beyond the average . It is not that all large genera are now varying much , and are thus increasing in the number of their ...
... genus have been formed , the species of that genus present a number of varieties , that is of incipient species , beyond the average . It is not that all large genera are now varying much , and are thus increasing in the number of their ...
Página 147
... genus or a distinct genus . The six descendants from ( I ) will form two sub - genera or genera . But as the original species ( I ) differed largely from ( A ) , standing nearly at the extreme end of the original genus , the six ...
... genus or a distinct genus . The six descendants from ( I ) will form two sub - genera or genera . But as the original species ( I ) differed largely from ( A ) , standing nearly at the extreme end of the original genus , the six ...
Página 203
... genus the stripes are either plainer or appear more commonly in the young than in the old . Call the breeds of pigeons , some of which have bred true for centuries , species ; and how exactly parallel is the case with that of the ...
... genus the stripes are either plainer or appear more commonly in the young than in the old . Call the breeds of pigeons , some of which have bred true for centuries , species ; and how exactly parallel is the case with that of the ...
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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Otras ediciones - Ver todas
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