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Studies In Spermatogenesis A Comparative Study Of The Heterochromosomes In Certain Species Of Coleoptera Hemiptera And Lepidoptera With Especial Reference To Sex Determination
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Book Synopsis Studies in Spermatogenesis ...: A comparative study of the heterochromosomes in certain species of Coleoptera, Hemiptera and Lepidoptera, with especial reference to sex determination by : Nettie Maria Stevens
Download or read book Studies in Spermatogenesis ...: A comparative study of the heterochromosomes in certain species of Coleoptera, Hemiptera and Lepidoptera, with especial reference to sex determination written by Nettie Maria Stevens and published by . This book was released on 1906 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies in Spermatogenesis ... by : Nettie Maria Stevens
Download or read book Studies in Spermatogenesis ... written by Nettie Maria Stevens and published by Palala Press. This book was released on 2015-12-07 with total page 76 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.
Book Synopsis Studies in Spermatogenesis, Vol. 2 by : N. M. Stevens
Download or read book Studies in Spermatogenesis, Vol. 2 written by N. M. Stevens and published by Forgotten Books. This book was released on 2016-08-30 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Studies in Spermatogenesis, Vol. 2: Pages 33-74, Plates VIII-XV; A Comparative Study of the Heterochromosomes in Certain Species of Coleoptera, Hemiptera and Lepidoptera, With Especial Reference to Sex Determination In Trz'r/zabda canadense the Spermatogonial chromosomes are invaria bly smaller than in T. Vz'rgata, but similar size relations prevail. The Spermatogonial plate (fig. 21) contains 30 chromosomes, 29 large and 1 extremely small. In the growth stages the association of the two unequally paired chromosomes with a rather large plasmosome is more evident than in T. Vz'rgata (figs. 22 In this Species the unequal pair is more often found at a different level from the other chromo somes in the early metaphase of the first maturation mitosis (fig. But it later comes into the plate with the other chromosomes (figs. 2 5 and divides earlier than most of the other bivalents (fig. In a polar view of this metaphase the largest chromosome often appears double (fig. 28) in a front view it is a tetrad as in T. Oz'rgata, figure 10. Figure 29 is the equatorial plate of a metaphase in which the larger component of the unequal pair has been removed in sectioning. The daughter plates of a first Spermatocyte in anaphase (fig. 30) Show the separation of the components of the heterochromosome pair and equatorial plates of the resulting two classes of second spermato cytes (fig. 31) Show the same conditions. Figures 32 and 33 are prophases of the second division, figure 33 showing the small chromo some ready for metakinesis. It was impossible here also to get good drawings of daughter plates of the second spermatocytes to Show the content of the two classes of spermatozoa, but there is no doubt that all of the chromosomes divide in the second mitosis, giving one class of spermatids containing the small chromosome, the other class its larger homologue. 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.
Book Synopsis Studies in Spermatogenesis by : Nettie Maria Stevens
Download or read book Studies in Spermatogenesis written by Nettie Maria Stevens and published by . This book was released on 1906 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies in Spermatogenesis with Especial Reference to the "Accessory Chromosome". by : N. M. Stevens
Download or read book Studies in Spermatogenesis with Especial Reference to the "Accessory Chromosome". written by N. M. Stevens and published by . This book was released on 1905 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies in Spermatogenesis by : Nettie Maria Stevens
Download or read book Studies in Spermatogenesis written by Nettie Maria Stevens and published by . This book was released on 1906 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies in Spermatogenesis. with Especial Reference to the 'accessory Chromosome'. Pt. 2 by : N.M. Stevens
Download or read book Studies in Spermatogenesis. with Especial Reference to the 'accessory Chromosome'. Pt. 2 written by N.M. Stevens and published by . This book was released on 1905 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comparative Study of the Heterochromosomes in Certain Species of Coleoptera, Hemiptera, and Lepidoptera, with Especial Reference to Sex Determination by : Nettie Maria Stevens
Download or read book A Comparative Study of the Heterochromosomes in Certain Species of Coleoptera, Hemiptera, and Lepidoptera, with Especial Reference to Sex Determination written by Nettie Maria Stevens and published by . This book was released on 1906 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies in Spermatogenesis by : N. M. Stevens
Download or read book Studies in Spermatogenesis written by N. M. Stevens and published by . This book was released on 1908 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies in spermatogenesis pt. 1-2, 1905-06 by : Nettie Maria Stevens
Download or read book Studies in spermatogenesis pt. 1-2, 1905-06 written by Nettie Maria Stevens and published by . This book was released on 1905 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies in Spermatogenesis ... by : Nettie Maria Stevens
Download or read book Studies in Spermatogenesis ... written by Nettie Maria Stevens and published by . This book was released on 1905 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies in Spermatogenesis ... by : Nettie Maria Stevens
Download or read book Studies in Spermatogenesis ... written by Nettie Maria Stevens and published by . This book was released on 1906 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Morphology written by and published by . This book was released on 1915 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Contributions from the Laboratory of Plant Genetics by : Bussey Institution. Laboratory of Genetics
Download or read book Contributions from the Laboratory of Plant Genetics written by Bussey Institution. Laboratory of Genetics and published by . This book was released on 1919 with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Biological Bulletin by : Frank Rattray Lillie
Download or read book The Biological Bulletin written by Frank Rattray Lillie and published by . This book was released on 1912 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 17, 21-105 contain Annual reports of the Marine Biological Laboratory for 1907/08-1952.
Download or read book The Gene written by Siddhartha Mukherjee and published by Simon and Schuster. This book was released on 2016-05-17 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: The #1 NEW YORK TIMES Bestseller The basis for the PBS Ken Burns Documentary The Gene: An Intimate History Now includes an excerpt from Siddhartha Mukherjee’s new book Song of the Cell! From the Pulitzer Prize–winning author of The Emperor of All Maladies—a fascinating history of the gene and “a magisterial account of how human minds have laboriously, ingeniously picked apart what makes us tick” (Elle). “Sid Mukherjee has the uncanny ability to bring together science, history, and the future in a way that is understandable and riveting, guiding us through both time and the mystery of life itself.” —Ken Burns “Dr. Siddhartha Mukherjee dazzled readers with his Pulitzer Prize-winning The Emperor of All Maladies in 2010. That achievement was evidently just a warm-up for his virtuoso performance in The Gene: An Intimate History, in which he braids science, history, and memoir into an epic with all the range and biblical thunder of Paradise Lost” (The New York Times). In this biography Mukherjee brings to life the quest to understand human heredity and its surprising influence on our lives, personalities, identities, fates, and choices. “Mukherjee expresses abstract intellectual ideas through emotional stories…[and] swaddles his medical rigor with rhapsodic tenderness, surprising vulnerability, and occasional flashes of pure poetry” (The Washington Post). Throughout, the story of Mukherjee’s own family—with its tragic and bewildering history of mental illness—reminds us of the questions that hang over our ability to translate the science of genetics from the laboratory to the real world. In riveting and dramatic prose, he describes the centuries of research and experimentation—from Aristotle and Pythagoras to Mendel and Darwin, from Boveri and Morgan to Crick, Watson and Franklin, all the way through the revolutionary twenty-first century innovators who mapped the human genome. “A fascinating and often sobering history of how humans came to understand the roles of genes in making us who we are—and what our manipulation of those genes might mean for our future” (Milwaukee Journal-Sentinel), The Gene is the revelatory and magisterial history of a scientific idea coming to life, the most crucial science of our time, intimately explained by a master. “The Gene is a book we all should read” (USA TODAY).
Book Synopsis Year Book by : Carnegie Institution of Washington
Download or read book Year Book written by Carnegie Institution of Washington and published by . This book was released on 1912 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: