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 67
... advantages that enabled their parents to become dominant over their compatriots . In these remarks on predominance , it should be understood that reference is made only to the forms which come into competition with each other , and more ...
... advantages that enabled their parents to become dominant over their compatriots . In these remarks on predominance , it should be understood that reference is made only to the forms which come into competition with each other , and more ...
Página 94
... advantage of plumed seeds no doubt stands in the closest relation to the land being already thickly clothed with other plants ; so that the seeds may be widely dis- tributed and fall on unoccupied ground . In the water- beetle , the ...
... advantage of plumed seeds no doubt stands in the closest relation to the land being already thickly clothed with other plants ; so that the seeds may be widely dis- tributed and fall on unoccupied ground . In the water- beetle , the ...
Página 95
... advantage over its competitors , or over the animals which prey on it . On the confines of its geographical range , a change of constitution with respect to climate would clearly be an advantage to our plant ; but we have reason to ...
... advantage over its competitors , or over the animals which prey on it . On the confines of its geographical range , a change of constitution with respect to climate would clearly be an advantage to our plant ; but we have reason to ...
Página 96
... advantage over a different set of competi- tors or enemies . It is good thus to try in imagination to give to any one species an advantage over another . Probably in no single instance should we know what to do . This ought to convince ...
... advantage over a different set of competi- tors or enemies . It is good thus to try in imagination to give to any one species an advantage over another . Probably in no single instance should we know what to do . This ought to convince ...
Página 98
... advantage , however slight , over others , would have the best chance of surviving and of procreating their kind ? On the other hand , we may feel sure that any variation in the least degree injurious would be rigidly destroyed . This ...
... advantage , however slight , over others , would have the best chance of surviving and of procreating their kind ? On the other hand , we may feel sure that any variation in the least degree injurious would be rigidly destroyed . This ...
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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