The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life, Volumen2AMS Press, 1972 |
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Página 112
... descent have diverged in a less degree from their common progenitor . Thus it comes that ancient and extinct genera are often in a greater or less degree intermediate in character between their modified descendants , or between their ...
... descent have diverged in a less degree from their common progenitor . Thus it comes that ancient and extinct genera are often in a greater or less degree intermediate in character between their modified descendants , or between their ...
Página 123
... modified descendants . If the inhabitants of one continent formerly differed greatly from those of another continent , so will their modified descendants still differ in nearly the same manner and degree . But after very long intervals ...
... modified descendants . If the inhabitants of one continent formerly differed greatly from those of another continent , so will their modified descendants still differ in nearly the same manner and degree . But after very long intervals ...
Página 126
... modification is necessarily slow , and depends on many complex contingencies . The dominant species belonging to large and dominant groups tend to leave many modified descendants , which form new sub - groups and groups . As these are ...
... modification is necessarily slow , and depends on many complex contingencies . The dominant species belonging to large and dominant groups tend to leave many modified descendants , which form new sub - groups and groups . As these are ...
Contenido
CONTENTS OF VOL | 1 |
CHAPTER X | 48 |
CHAPTER XII | 129 |
Derechos de autor | |
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Términos y frases comunes
accumulated adapted admit adult affinity allied species ancient animals appear Archipelago arctic areas become beds believe birds breeds Cambrian changes characters classification climate closely allied continent crustaceans degree deposited difficulty distant distinct species domestic doubt embryo Europe existing extinct fact faunas fertilised fertility flowers formations formerly forms fossil fresh-water Fritz Müller Gärtner genera genus geological period geological record Glacial period groups of species habits hybrids hybrids produced important individuals inhabitants inherited insects instance intermediate intervals land larvæ less living mammals manner marine Marsupials migration modified descendants mongrels mountains natural selection naturalists nearly occur oceanic islands offspring organisation parent parent-form peculiar perfect pistil plants pollen present probably produced quadrupeds reciprocal crosses regions remains remarked reproductive resemblance rocks rudimentary organs seeds Silurian slight South America species belonging stage stamens sterility structure successive suppose terrestrial tertiary tion variations varieties whilst widely different wings