Mutations and Evolution (Classic Reprint)

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Excerpt from Mutations and EvolutionIf we go but a step further, and assume that these variations are followed by others in the same population with elimination of some steps by selection or if we assume the immediate origin of new specific types through single mutations, and their gradual spread from the centre of origin, then we are using the mutation theory of de Vries as it is widely applied at the present time. Darwin's objections to sudden and considerable deviations of structure as material for evolution, were based largely upon his observations of wide saltations and monstrosities. They included the well-known argument of swamping through crossing, which has since been negatived by the Mendelian discoveries.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.