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 vi
... important of all relations . Page 75 CHAPTER IV . NATURAL SELECTION ; OR THE SURVIVAL OF THE FITTEST . Natural Selection - its power compared with man's selection - its power on characters of trifling importance - its power at all ages ...
... important of all relations . Page 75 CHAPTER IV . NATURAL SELECTION ; OR THE SURVIVAL OF THE FITTEST . Natural Selection - its power compared with man's selection - its power on characters of trifling importance - its power at all ages ...
Página vii
... importance - Organs not in all cases absolutely perfect - The law of Unity of Type and of the Conditions of Existence embraced by the theory of Natu- ral Selection . . 207 CHAPTER VII . MISCELLANEOUS OBJECTIONS TO THE THEORY OF NATURAL ...
... importance - Organs not in all cases absolutely perfect - The law of Unity of Type and of the Conditions of Existence embraced by the theory of Natu- ral Selection . . 207 CHAPTER VII . MISCELLANEOUS OBJECTIONS TO THE THEORY OF NATURAL ...
Página ix
... important corrections and some additions in the present volume are tabulated on the following page , for the convenience of those interested in the subject , and who possess the fifth edition . The second edition was little more than a ...
... important corrections and some additions in the present volume are tabulated on the following page , for the convenience of those interested in the subject , and who possess the fifth edition . The second edition was little more than a ...
Página 4
... importance to gain a clear insight into the means of modification and co- adaptation . At the commencement of my ... important , we shall see how great is the power of man in accumulating by his Selection successive slight variations ...
... importance to gain a clear insight into the means of modification and co- adaptation . At the commencement of my ... important , we shall see how great is the power of man in accumulating by his Selection successive slight variations ...
Página 6
... importance , for they determine the present welfare and , as I believe , the future success and modification of every ... important , but not the exclusive , means of modification . CHAPTER I. VARIATION UNDER DOMESTICATION . Causes of ...
... importance , for they determine the present welfare and , as I believe , the future success and modification of every ... important , but not the exclusive , means of modification . CHAPTER I. VARIATION UNDER DOMESTICATION . Causes of ...
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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