ISBN: 9781332028900

[ED: Taschenbuch], [PU: Forgotten Books], Excerpt from Proceedings of the American Philosophical Society, Vol. 43: Held at Philadelphia for Promoting Useful Knowledge Under heredity we un… Plus…

[ED: Taschenbuch], [PU: Forgotten Books], Excerpt from Proceedings of the American Philosophical Society, Vol. 43: Held at Philadelphia for Promoting Useful Knowledge Under heredity we understand the transference to the offspring of qualities of the parent or parents. The interpretation of the phenomena involved constitutes one of the broadest problems in the field of Biology, and has for centuries been the theme of eager discussion. Yet only in the past forty years has there come out any positive knowledge upon the subject, except the making known of certain cases of parthenogenesis and of the occasional difference of reciprocal crosses. There are obviously two methods of determining the facts of heredity. First, by the intercrossing of different varieties or species, and the determination of the relative influences of the parents upon the offspring. The first fundamental work in this line was done by Mendel in 1865 (Versuche über Pflanzenhybriden), who determined a large series of facts for the plant genus Pisum, and from the data established a mathematical law for this genus as to the inheritance of parental qualities by the hybrids. This memoir, only some three years ago resurrected from its long obscurity, is to-day occupying the attention it deserves, and has stimulated much work along the same line. De Vries' magnificent work, Die Mutationstheorie, demands as well recognition in this respect. But it is clear that such experimental intercrossing, in so far as only the end results of the crosses are considered, can do no more than state the degrees of resemblance of the offspring to the parents, and decide the questions as to the fertility of the hybrids. Important and necessary as it is, it does not go to the root of the matter, and cannot present any empirical analysis of the underlying factors. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.Versandfertig in 3-5 Tagen, [SC: 0.00]<

ISBN: 133202890X

Paperback, [EAN: 9781332028900], Forgotten Books, Forgotten Books, Book, [PU: Forgotten Books], Forgotten Books, Excerpt from Proceedings of the American Philosophical Society, Vol. 43: H… Plus…

Paperback, [EAN: 9781332028900], Forgotten Books, Forgotten Books, Book, [PU: Forgotten Books], Forgotten Books, Excerpt from Proceedings of the American Philosophical Society, Vol. 43: Held at Philadelphia for Promoting Useful KnowledgeThe decease was announced of Alfred R. C. Selwyn, LL.D., at Vancouver, B. C., on October 18, 1902, set. 78.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., 226688, Biology, 13524, Cell Biology, 226689, Developmental Biology, 226690, Entomology, 13537, Marine Biology, 172406, Microbiology, 13540, Molecular Biology, 227277, Biostatistics, 13469, Biological Sciences, 75, Science & Math, 1000, Subjects, 283155, Books, 13563, Zoology, 16310991, Amphibians, 16311011, Animal Behavior & Communication, 16311021, Animal Psychology, 3049091, Ichthyology, 3049111, Invertebrates, 3049131, Mammals, 3049151, Ornithology, 3049171, Primatology, 16311061, Reptiles, 13469, Biological Sciences, 75, Science & Math, 1000, Subjects, 283155, Books, 13603, Geology, 16052951, Geomorphology, 16052841, Historical, 271631011, Limnology, 16052891, Physical, 16052941, Plate Tectonics, 16053011, Sedimentary, 16053041, Specific Locations, 16052931, Structural, 16053021, Volcanology, 13592, Earth Sciences, 75, Science & Math, 1000, Subjects, 283155, Books, 491714, Zoology, 491702, Biology & Life Sciences, 468216, Science & Mathematics, 465600, New, Used & Rental Textbooks, 2349030011, Specialty Boutique, 283155, Books, 684289011, Biology, 491702, Biology & Life Sciences, 468216, Science & Mathematics, 465600, New, Used & Rental Textbooks, 2349030011, Specialty Boutique, 283155, Books, 491730, Earth Sciences, 468216, Science & Mathematics, 465600, New, Used & Rental Textbooks, 2349030011, Specialty Boutique, 283155, Books<

ISBN: 9781332028900

Paperback, [PU: Forgotten Books], Excerpt from Proceedings of the American Philosophical Society, Vol. 43: Held at Philadelphia for Promoting Useful Knowledge In the bed of the creek (one… Plus…

Paperback, [PU: Forgotten Books], Excerpt from Proceedings of the American Philosophical Society, Vol. 43: Held at Philadelphia for Promoting Useful Knowledge In the bed of the creek (one mile west of the ridge in which the coal mine is situated) were, among the boulders of sandstone, some fragments of syenitic granite and of a basaltic rock. Which latter is said to cap a few of the highest points of this ridge. Whitney's party also passed over the divide from San Mateo to Half moon Bay, noting the Cretaceous and Miocene strata and the Mon tara granite exposed along the road, but seem to have overlooked the diabase exposures on the east and south of the granite outcrop. W. L. Watts in a paper' on San Mateo County says At some points basaltic rocks have been observed, and on the San Gregorio Rancho the Field Assistant of the Bureau noted and obtained specimens of vesicular dolerite, the vesicles of which were filled with petroleum. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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., Biology, Life Sciences<

2017, ISBN: 133202890X

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