On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeEaston Press, 1976 - 470 páginas |
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Página 11
... admit that many domestic breeds must have originated in Europe ; for whence otherwise could they have been derived ? So it is in India . Even in the case of the breeds of the domestic dog throughout the world , which I admit are ...
... admit that many domestic breeds must have originated in Europe ; for whence otherwise could they have been derived ? So it is in India . Even in the case of the breeds of the domestic dog throughout the world , which I admit are ...
Página 210
... admit that these great and sudden transformations have left no trace of their action on the embryo . To admit all this is , as it seems to me , to enter into the realms of miracle , and to leave those of Science . INSTINCT SO MANY ...
... admit that these great and sudden transformations have left no trace of their action on the embryo . To admit all this is , as it seems to me , to enter into the realms of miracle , and to leave those of Science . INSTINCT SO MANY ...
Página 439
... admit that a multitude of forms , which till lately they themselves thought were special creations , and which are still thus looked at by the majority of naturalists , and which consequently have all the external characteristic ...
... admit that a multitude of forms , which till lately they themselves thought were special creations , and which are still thus looked at by the majority of naturalists , and which consequently have all the external characteristic ...
Contenido
VARIATION UNDER NATURE | 30 |
STRUGGLE FOR EXISTENCE | 45 |
NATURAL SELECTION | 59 |
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Términos y frases comunes
accumulated adapted admit affinities allied species America ancient appear beak become bees believe belonging birds breeds cause cells characters climate closely allied colour common progenitor continuous crossed crustaceans degree developed difficulty distinct species divergence doubt effects eggs embryo existing exterminated extinct extremely facts favourable fertilised fertility flowers formation forms fossil Fritz Müller genera genus geological geological period gradations greater number groups of species habits Hence hybrids hybrids produced important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs Origin of Species parent peculiar perfect pigeons pistil plants pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked resemblance rudimentary seeds slight South America stamens sterility structure struggle successive supposed swimbladder theory variability variations varieties vary whilst whole wings young