Darwinism And Human Life ..
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In our eReader you can find the full English version of the book. Read Darwinism And Human Life .. 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 Darwinism And Human Life ..
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To quickly assess the difficulty of the text, read a short excerpt:
After this experiment Semon exposed the plants to continuous darkness or continuous illumination.
The twelve-hours' cycle still manifested itself for a time, but gradually became indistinct. Here we see the inherited nature struggling, as it were, against inappropriate nurture.
(6) Although modifications do not seem to be transmitted as such, or in any representative degree, there is no doubt that they or their secondary results may in some cases affect the offspring.
This is especially the cas...e in typical mammals, where there is before birth a prolonged (placental) connection between the mother and the xmborn young. In such cases the offspring is for a time almost part of the maternal body, and hable to be afiected by modifications thereof— e.gf. by good or bad nutritive conditions. In other cases, also, it may be that deeply saturating parental modifica- tions, such as the results of alcoholic and other poisoning, affect the germ-cells, and thus the offspring. A disease may saturate the body with toxins and waste-products, and these may provoke prejudicial germinal variations.
What to read after Darwinism And Human Life ..?
You can find similar books in the "Read Also" column, or choose other free books by J Arthur John Arthur Thomson to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
After this experiment Semon exposed the plants to continuous darkness or continuous illumination.
The twelve-hours' cycle still manifested itself for a time, but gradually became indistinct. Here we see the inherited nature struggling, as it were, against inappropriate nurture.
(6) Although modifications do not seem to be transmitted as such, or in any representative degree, there is no doubt that they or their secondary results may in some cases affect the offspring.
This is especially the cas...e in typical mammals, where there is before birth a prolonged (placental) connection between the mother and the xmborn young. In such cases the offspring is for a time almost part of the maternal body, and hable to be afiected by modifications thereof— e.gf. by good or bad nutritive conditions. In other cases, also, it may be that deeply saturating parental modifica- tions, such as the results of alcoholic and other poisoning, affect the germ-cells, and thus the offspring. A disease may saturate the body with toxins and waste-products, and these may provoke prejudicial germinal variations.
What to read after Darwinism And Human Life ..?
You can find similar books in the "Read Also" column, or choose other free books by J Arthur John Arthur Thomson to read onlineMoreLess
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