Readings in Evolution, Genetics, And Eugenics
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In our eReader you can find the full English version of the book. Read Readings in Evolution, Genetics, And Eugenics Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Readings in Evolution, Genetics, And Eugenics
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CRITIQUE OF DARWINISM 255 Darwin came very near to this conception of definite variability when he pointed out that " if a country were changing, the altered conditions would tend to cause variation, not but what I believe most beings vary at all times enough for selection to act on." Extermination would expose the remainder to the "mutual action of a different set of inhabitants, which I believe to be more important to the life of each being than mere climate," and as "the same spot will suppo...rt more life if occupied by very diverse forms," it is evident that selection will favour very great diversity of structure.
Bearing in mind this cumulative action of selection it wUl follow that under constant or relatively constant conditions the struggle for successful living will become more and more selective in character, even if the actual number of inhabitants remain more or less the same as when the struggle first commenced. The selection of variations will thus tend to pass through certain more or less ill-defined, but nevertheless, real stages.
What to read after Readings in Evolution, Genetics, And Eugenics?
You can find similar books in the "Read Also" column, or choose other free books by Newman, Horatio Hackett, B. 1875 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
CRITIQUE OF DARWINISM 255 Darwin came very near to this conception of definite variability when he pointed out that " if a country were changing, the altered conditions would tend to cause variation, not but what I believe most beings vary at all times enough for selection to act on." Extermination would expose the remainder to the "mutual action of a different set of inhabitants, which I believe to be more important to the life of each being than mere climate," and as "the same spot will suppo...rt more life if occupied by very diverse forms," it is evident that selection will favour very great diversity of structure.
Bearing in mind this cumulative action of selection it wUl follow that under constant or relatively constant conditions the struggle for successful living will become more and more selective in character, even if the actual number of inhabitants remain more or less the same as when the struggle first commenced. The selection of variations will thus tend to pass through certain more or less ill-defined, but nevertheless, real stages.
What to read after Readings in Evolution, Genetics, And Eugenics?
You can find similar books in the "Read Also" column, or choose other free books by Newman, Horatio Hackett, B. 1875 to read onlineMoreLess
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