Download or read book Genetic Studies on Drosophila Virilis written by Charles William Metz and published by . This book was released on 1923 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Studies on Drosophila Virilis with Considerations on the Genetics of Other Species of Drosophila written by Charles William Metz and published by Hardpress Publishing. This book was released on 2013-12 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
Download or read book Genetic Studies on Drosophila Virilis written by Charles W. Metz and published by . This book was released on 2015-07-21 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Genetic Studies on Drosophila Virilis: With Considerations on the Genetics of Other Species of Drosophila In most groups of animals and plants, including those susceptible to genetic study through intensive breeding, the chromosome groups of related species show a high degree of uniformity. The different members of a genus, for instance, usually differ relatively little in this regard. In some cases the uniformity may extend even to subfamilies or families, as, for example, in the Acrididae among the Orthoptera, where all of approximately 40 genera studied agree in having essentially the same chromosome group (cf. McClung, 1914; Harvey, 1916). It would seem probable, a priori, that where many related species exhibit such a constancy in chromosome groups, the apparent homology of chromosomes is real, i. e., similar chromosomes in different species are essentially alike in genetic make-up. On the other hand, there are various exceptions to the general rule of constancy, and a number of cases are known in which closely related species have very dissimilar chromosome groups. Hence it may be argued that even where a constancy exists it may be superficial and not dependent upon, or significant of, a likeness in genetic constitution of similar chromosomes. In fact, very little is known as to how far morphological criteria are trustworthy as indications of homology between chromosomes. In one case recently investigated by Lancefield and Metz (1921, 1922), the results indicate that genetic homology does not correspond to morphological similarity as regards two pairs of chromosomes in Drosophila willistoni compared with two similar pairs in D. melanogaster. These and other considerations serve to emphasize the necessity of learning something of the genetic constitution of chromosomes before they can safely be compared from the evolutionary standpoint. It is believed that the only method of obtaining reliable information on chromosome evolution is by means of genetic analysis combined with cytological observation. Ideal material for such a study would be provided by a group of species satisfying the following four requirements: In the first place, it should exhibit among its members a series of different chromosome groups; secondly, the species should be susceptible to intensive breeding under controlled conditions; in the third place, one or more of the species should be favorable for genetic analysis through the study of mutant races; and lastly, the species should hybridize with one another and give fertile hybrids. 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."
Download or read book Genetic Studies on Drosophila Virilis with Considerations on the Genetics of Other Species of Drosophila written by Charles William Metz and published by Palala Press. This book was released on 2015-09-03 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Genetic Studies on Drosophila Virilis With Considerations on the Genetics written by Charles W Metz and published by Sagwan Press. This book was released on 2018-01-31 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Genetic Studies on Drosophila Virilis with Considerations on the Genetics Scholar s Choice Edition written by Charles W Metz and published by Scholar's Choice. This book was released on 2015-02-18 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Genetic Studies on Drosophilia Virilis with Considerations on the Genetics of Other Species of Drosophilia written by Charles W. Metz and published by . This book was released on 1923 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Studies on Drosophila Virilis with Considerations on the Genetics of Other Species of Drosophila by Charles W Metz Mildred S Moses and Eleanor D Mason written by Charles William Metz and published by . This book was released on 1923 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Studies on Drosophila Virilis written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Studies on Drosophila Virilis with Considerations on the Genetics of Other Species of Drosophila Primary Source Edition written by Charles William Metz and published by Nabu Press. This book was released on 2013-09 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Genetic Studies on Drosophila Virilis with Considerations on the Geneties of Other Species of Drosophila by Charles W Metz Mildred S Moses and Eleanor D Mason written by Eleanor D. Mason and published by . This book was released on 1923 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Studies on Drosophila Virilis written by Charles William Metz and published by . This book was released on 1923 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies in the Genetics of Drosophila written by John Thomas Patterson and published by . This book was released on 1940 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies in the Genetics of Drosophila written by and published by . This book was released on 1954 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Incompatibility of Non conspecific Genetic Elements in Postzygotic Isolation in the Drosophila Virilis Phylad Diptera Drosophilidae written by Erja Heikkinen and published by . This book was released on 1991 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies in the Genetics of Drosophilia written by University of Texas and published by . This book was released on 1952 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drosophila Virilis Histone Genes written by Leslie Leigh Domier and published by . This book was released on 1984 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
