Prometheus, or, biology and the advancement of man / by H.S. Jennings.

  • Herbert Spencer Jennings
Date:
[1925]
Catalogue details

Licence: Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)

Credit: Prometheus, or, biology and the advancement of man / by H.S. Jennings. Source: Wellcome Collection.

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    BIOLOGICAL BACKGROUND simple, hard-and-fast thing that old- fashioned Mendelism represented it. Further, more attentive observation has revealed that any single one of the genes affects, not one characteristic only, but many ; probably the entire body. The idea of representative hereditary units, each standing for a single later characteristic, is exploded ; it should be cleared completely out of mind. Obviously, these considerations have practical bearings. Students of heredity, like other men, are disposed to make the most of their achievements : to dwell upon what they know, what they can do, what they can predict. They have, indeed, achieved much; the last twenty-five years have made greater advance in the knowledge of heredity than had aU the ages before. But с [33]