The Origin of Species by Means of Natural Selection: Or, the Preservation of Favored Races in the Struggle for Life, Volumen1D. Appleton, 1898 |
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Página vii
... structures variable - Parts developed in an unusual manner are highly variable ; specific characters more variable than ... structure with changed functions- Widely different organs in members of the same class , de- veloped from one and ...
... structures variable - Parts developed in an unusual manner are highly variable ; specific characters more variable than ... structure with changed functions- Widely different organs in members of the same class , de- veloped from one and ...
Página viii
... structure not necessarily simultaneous - Difficulties of the theory of the Natural Selection of instincts - Neuter or sterile insects Summary . Page 319 ADDITIONS AND CORRECTIONS TO THE SIXTH EDITION . NUMEROUS small. viii CONTENTS .
... structure not necessarily simultaneous - Difficulties of the theory of the Natural Selection of instincts - Neuter or sterile insects Summary . Page 319 ADDITIONS AND CORRECTIONS TO THE SIXTH EDITION . NUMEROUS small. viii CONTENTS .
Página xi
... structure of the feet of certain mar- supial animals . On serial homologies , corrected . Mr. E. Ray Lankester on morphology . On the asexual reproduction of Chironomus . On the origin of rudimentary parts , corrected . Recapitulation ...
... structure of the feet of certain mar- supial animals . On serial homologies , corrected . Mr. E. Ray Lankester on morphology . On the asexual reproduction of Chironomus . On the origin of rudimentary parts , corrected . Recapitulation ...
Página 3
... structure and coadaptation which justly excites our admiration . Naturalists continually refer to external conditions , such as climate , food , & c . , as the only possible cause of variation . In one limited sense , as we shall here ...
... structure and coadaptation which justly excites our admiration . Naturalists continually refer to external conditions , such as climate , food , & c . , as the only possible cause of variation . In one limited sense , as we shall here ...
Página 4
... structure of this parasite , with its relations to several distinct organic beings , by the effects of external conditions , or of habit , or of the volition of the plant itself . It is , therefore , of the highest importance to gain a ...
... structure of this parasite , with its relations to several distinct organic beings , by the effects of external conditions , or of habit , or of the volition of the plant itself . It is , therefore , of the highest importance to gain a ...
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Términos y frases comunes
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 descendants developed difficulty distinct species disuse divergence 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 increase inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less males manner Melipona Mivart modified natural selection naturalists nearly nest occasionally offspring organisation organs origin Origin of Species parent perfect period pigeons pollen pollen-grains present preserved prey principle probably produced progenitor quadrupeds rank rarely Red Grouse relation remarked resemble rock-pigeon seeds sexes sexual selection slight stamens striped structure struggle supposed swimbladder tend tendency tion tree variability variations varieties vary widely wings young