Studies Of Inheritance In Guinea Pigs And Rats Classic Reprint
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Studies Of Inheritance In Guinea Pigs And Rats Classic Reprint
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Author : W. E. Castle
language : en
Publisher:
Release Date : 2015-07-21
Studies Of Inheritance In Guinea Pigs And Rats Classic Reprint written by W. E. Castle and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-07-21 with Science categories.
Excerpt from Studies of Inheritance in Guinea-Pigs and Rats For several years I have been engaged in studies of heredity in guinea-pigs. In the course of these studies all the common varieties of guinea-pigs have been investigated by the method of experimental breeding and something has been learned concerning their interrelationships and probable mode of origin. The actual origin of most of these varieties is, however, unknown, as is true also concerning most varieties of domesticated animals. One or two varieties have, however, been made synthetically in the laboratory and it is conceivable that, if we had the original wild stock to work with, from which the domesticated guinea-pig has arisen, some or all of the existing varieties might be synthesized anew and perhaps still others might be obtained, and that in this way something might be learned of the method by which new varieties arise. From considerations such as these I have for several years been seeking to obtain living specimens of the wild species which most closely resemble guinea-pigs. In 1903 I received from Campinas, Brazil, 3 wild-caught individuals referred at the tune to the species Cavia aperea, but since found to agree better with the description of C. rufescens. From two of these animals young were obtained, and crosses, the results of which have been described in detail by Dr. Detlefsen (1914), were made with domesticated guinea-pigs. It may be noted that all male F1 hybrids were sterile, but that the F1 females were fertile, and that upon repeated crossing of these with male guinea-pigs, a race of fertile hybrids was at last obtained, these being, in the language of breeders, about guinea-pig, rufescens. From this result it seems doubtful whether C. rufescens has any close genetic relationship to the domesticated guinea-pig, although by hybridization it has been found possible to produce races ( or more guinea-pig) which have derived certain characters from a rufescens ancestor. Cavia aperea from Argentina has been crossed with the guinea-pig by Nehring (1893, 1894) in Berlin, with the production of fully fertile hybrids. This result indicates a closer relationship with the guinea-pig than C. rufescens manifests. Darwin (1876), however, did not regard aperea as the ancestor of the guinea-pig, because he found it to be infested with a different species of louse. I have not myself been able as yet to obtain specimens of C. aperea. Nehring (1889) has argued with much plausibility that Cavia cutleri of Peru is more probably the ancestor of the guinea-pig, for (1) it agrees closely with the guinea-pig in cranial characters and it occurs in a region where guinea-pigs have been for a long time kept in domestication, as is shown by the occurrence of mummified guinea-pigs which had been buried with the dead. 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."
Studies Of Inheritance In Guinea Pigs And Rats
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Author : William Ernest Castle
language : en
Publisher: Wentworth Press
Release Date : 2019-03-24
Studies Of Inheritance In Guinea Pigs And Rats written by William Ernest Castle and has been published by Wentworth Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-03-24 with History categories.
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Studies Of Inheritance In Guinea Pigs And Rats By W E Castle And Sewall Wright
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Author :
language : en
Publisher:
Release Date : 1916
Studies Of Inheritance In Guinea Pigs And Rats By W E Castle And Sewall Wright written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1916 with categories.
Reversion In Guinea Pigs And Its Explanation And Experimental Studies Of The Inheritance Of Color In Mice Classic Reprint
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Author : W. E. Castle
language : en
Publisher: Forgotten Books
Release Date : 2017-10-18
Reversion In Guinea Pigs And Its Explanation And Experimental Studies Of The Inheritance Of Color In Mice Classic Reprint written by W. E. Castle and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-18 with Science categories.
Excerpt from Reversion in Guinea-Pigs and Its Explanation, And, Experimental Studies of the Inheritance of Color in Mice Castle, W. E., 1905. Heredity Of coat-characters in guinea-pigs and rabbits. Carnegie Institution of Washington Publication N o. 23. 1907. On a case of reversion induced by cross-breeding and its fixation. Science, N. S., vol. 25, p. 151. 1907a. The production and fixation of new breeds. Proc. Am. Breeders' Associ ation, vol. 3, p. 34. 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.
Studies Of Inheritance In Guinea Pigs And Rats
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Author : Sewall Wright
language : en
Publisher: Palala Press
Release Date : 2015-12-05
Studies Of Inheritance In Guinea Pigs And Rats written by Sewall Wright and has been published by Palala Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-05 with categories.
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Selection And Cross Breeding In Relation To The Inheritance Of Coat Pigments And Coat Patterns In Rats And Guinea Pigs
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Author : Hansford MacCurdy
language : en
Publisher:
Release Date : 1907
Selection And Cross Breeding In Relation To The Inheritance Of Coat Pigments And Coat Patterns In Rats And Guinea Pigs written by Hansford MacCurdy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1907 with Animals categories.
Studies Of Inheritance In Guinea Pigs And Rats
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Author : William Ernest Castle
language : en
Publisher:
Release Date : 1916
Studies Of Inheritance In Guinea Pigs And Rats written by William Ernest Castle and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1916 with categories.
Studies Of Inheritance In Guinea Pigs And Rats C
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Author : William Ernest Castle
language : en
Publisher:
Release Date : 1916
Studies Of Inheritance In Guinea Pigs And Rats C written by William Ernest Castle and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1916 with categories.
Studies Of Inheritance In Guinea Pigs And Rats Primary Source Edition
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Author : William E. 1867-1962 Castle
language : en
Publisher: Nabu Press
Release Date : 2013-09
Studies Of Inheritance In Guinea Pigs And Rats Primary Source Edition written by William E. 1867-1962 Castle and has been published by Nabu Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09 with categories.
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
Studies Of Inheritance In Guinea Pigs And Rats
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Author : William Ernest Castle
language : en
Publisher: Palala Press
Release Date : 2016-05-17
Studies Of Inheritance In Guinea Pigs And Rats written by William Ernest Castle and has been published by Palala Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-17 with categories.
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.