Evolution and Genetics (Classic Reprint)

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Excerpt from Evolution and GeneticsHE third reprinting Of the Vanuxem Lectures for 1915-16, entitled A Critique of the Theory of Evolution, having been exhausted, the publishers have asked for a revised edition. The revision is no less an attempt at a critique Of the evolution theory than its predecessor, but, as the change in title sug gests, greater attention is here paid to one Of the most debated questions among evolutionists today, namely, the bearing Of the recent discoveries in genetics and in mutation on the theory Of evolution. While in a general way Darwin's theory Of Natu ral Selection is independent Of the origin Of the new variations that furnish it with its materials, yet the scientific formulation Of the theory is intimately con nected with the origin and inheritance Of suitable vari ations. For instance, if most of the observed variabil ity Of animals and plants were due directly to the environment, and if the effects thus brought about were not inherited, such variability could no longer be appealed to as material for natural selection. Again, if the variations that appear as mutants are always defective types, they could not, even though they are inherited, be appealed to as furnishing ma terial for progressive evolution.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.