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Books Bücher 1 - 10 von 13 in I have stated in the first chapter, that at whatever age a variation first appears...
" I have stated in the first chapter, that at whatever age a variation first appears in the parent, it tends to re-appear at a corresponding age in the offspring. Certain variations can only appear at corresponding . ages ; for instance, peculiarities in... "
The Geological Evidences of the Antiquity of Man: With Remarks on Theories ... - Seite 415
von Sir Charles Lyell - 1863 - 520 Seiten
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The Shipley collection of scientific papers, Band 62

1901
...obtained. Darwin himself suggested that the clue might be found in the consideration that at whatever age a variation first appears in the parent, it tends to reappear at a corresponding age in the offspring ; but this must be regarded rather as a statement of the fundamental fact of embryology than as an...
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On the Origin of Species by Means of Natural Selection; Or, The Preservation ...

Charles Darwin - 1861 - 440 Seiten
...period, ju I have stated in the first chapter, that there is some y evidence to render it probable, that at whatever age any variation first appears in...reappear at a corresponding age in the offspring. Certain variations can only appear at corresponding ages, for instance, peculiarities in the caterpillar,...
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On the Origin of Species by Means of Natural Selection: Or, The Preservation ...

Charles Darwin - 1864 - 440 Seiten
...early period. I have stated in the first chapter, that there is some evidence to render it probable, that at whatever age any variation first appears in...reappear at a corresponding age in the offspring. Certain variations can only appear at corresponding ages, for instance, peculiarities in the caterpillar,...
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On the Origin of Species by Means of Natural Selection, Or The Preservation ...

Charles Darwin - 1875 - 458 Seiten
...shape, as long as it was fed by its parents. I have stated in the first chapter, that at whatever age a variation first appears in the parent, it tends to...re-appear at a corresponding age in the offspring. Certain variations can only appear at corresponding ages ; for instance, peculiarities in the caterpillar,...
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Darwinism Stated by Darwin Himself: Characteristic Passages from the ...

Charles Darwin - 1884 - 351 Seiten
...shape, as long as it was fed by its parents. I have stated in the first chapter that at whatever age a variation first appears in the parent, it tends to reappear at a corresponding age in the offspring. Certain variations can only appear at corresponding ages ; for instance, peculiarities in the caterpillar,...
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Vertebrate Embryology: A Text-book for Students and Practitioners

Arthur Milnes Marshall - 1893 - 640 Seiten
...found. Darwin himself suggested that the clue might be found in the consideration that at whatever age a variation first appears in the parent, it tends to reappear at a corresponding age in the offspring ; but this must be regarded rather as a statement of the fundamental fact of embryology than as an...
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Charles Darwin's Works: The origin of species by means of natural selection ...

Charles Darwin - 1896
...shape, as long as it was fed by its parents. I have stated in the first chapter, that at whatever age a variation first appears in the parent, it tends to...re-appear at a corresponding age in the offspring. Certain variations can only appear at corresponding . ages ; for instance, peculiarities in the caterpillar,...
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The Origin of Species

Charles Darwin - 1909 - 552 Seiten
...shape, as long as it was fed by its parents. I have stated in the first chapter, that at whatever age a variation first appears in the parent, it tends to reappear at a corresponding age in the offspring. Certain variations can only appear at corresponding ages ; for instance, peculiarities in the caterpillar,...
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Science as a Way of Knowing: The Foundations of Modern Biology

John Alexander Moore - 1999 - 530 Seiten
..."may have supervened at a not very early period in life" (that is, late in embryonic life); and third, "that at whatever age any variation first appears...reappear at a corresponding age in the offspring" (p. 444). Darwin's hypothesis of descent with modification — that is, natural selection acting on...
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On the Origin of Species

Charles Darwin - 2003 - 672 Seiten
...early period. I have stated in the first chapter, that there is some evidence to render it probable, that at whatever age any variation first appears in...reappear at a corresponding age in the offspring. Certain variations can only appear at corresponding ages, for instance, peculiarities in the caterpillar,...
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