Author: Thomas Hunt MorganPublisher:
ISBN: 3752445858
Category :
Languages : en
Pages : 126
Book Description
Reproduction of the original: The Genetic and the operative evidence relating to secondary sexual characters by Thomas Hunt Morgan
The Genetic and the Operative Evidence Relating to Secondary Sexual Characters
Author: Thomas Hunt MorganPublisher:
ISBN: 3752445858
Category :
Languages : en
Pages : 126
Book Description
Reproduction of the original: The Genetic and the operative evidence relating to secondary sexual characters by Thomas Hunt Morgan
The Genetic and the Operative Evidence Relating to Secondary Sexual Characters
Author: Thomas Hunt MorganPublisher:
ISBN:
Category : Genetics
Languages : en
Pages : 138
Book Description
GENETIC & THE OPERATIVE EVIDEN
Author: Thomas Hunt 1866-1945 MorganPublisher: Wentworth Press
ISBN: 9781362344742
Category : History
Languages : en
Pages : 140
Book Description
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.
The Genetic and the Operative Evidence Relating to Secondary Sexual Characters - Scholar's Choice Edition
Author: Thomas Hunt MorganPublisher: Scholar's Choice
ISBN: 9781298395283
Category :
Languages : en
Pages : 130
Book Description
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.
The Genetic and the Operative Evidence Relating to Secondary Sexual Characters (Classic Reprint)
Author: T. H. MorganPublisher:
ISBN: 9781332788644
Category : Science
Languages : en
Pages : 138
Book Description
Excerpt from The Genetic and the Operative Evidence Relating to Secondary Sexual Characters There are a few races of poultry that have two kinds of males, one with the feathering of the ordinary cock, the other with the feathering of the hen. The Hamburgs and the Campines are perhaps the best known races of this sort. Convention amongst breeders, in certain countries, has determined that the cock-feathered bird shall be the standard, and at other times and places that the hen-feathered males shall be the show birds. In one breed, at least, viz, the Sebright bantams, the hen-feathered cock is the only known type. Cock feathered Sebrights have never been seen, so far as I know. This breed is pure for hen-feathering. As shown in plate 1, figure 3, the male Sebright lacks the long, pointed saddle feathers at the base of the tail of the common cock, also the peculiar back and neck feathers (hackles) of the cock bird, as well as the male feathering on the bow of the wing. His feathers in these parts are almost exactly like those of the hen (plate 4, fig. The long Sickle feathers covering the true tail are also absent, although the two median ones sometimes occur in males of this race. The Sebrights seemed excellent material for studying the heredity of this type of plumage in the male. In 1911 I began to study this problem, and crossed Sebrights to black-breasted Game bantams. The latter race was chosen not only because the males have the typical cock-feathering, but also because the coloration of these birds resembles very closely that of the jungle-fowl, from which many, perhaps all, of our domesticated races have sprung. 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.
The Genetic and the Operative Evidence Relating to Secondary Sexual Characters
Author: Thomas Hunt MorganPublisher:
ISBN:
Category : Science
Languages : en
Pages : 142
Book Description
Classified List of Publications of the Carnegie Institution of Washington
Author: Carnegie Institution of WashingtonPublisher:
ISBN:
Category :
Languages : en
Pages : 218
Book Description
Sex Itself
Author: Sarah S. RichardsonPublisher: University of Chicago Press
ISBN: 022608471X
Category : Science
Languages : en
Pages : 320
Book Description
Human genomes are 99.9 percent identical—with one prominent exception. Instead of a matching pair of X chromosomes, men carry a single X, coupled with a tiny chromosome called the Y. Tracking the emergence of a new and distinctive way of thinking about sex represented by the unalterable, simple, and visually compelling binary of the X and Y chromosomes, Sex Itself examines the interaction between cultural gender norms and genetic theories of sex from the beginning of the twentieth century to the present, postgenomic age. Using methods from history, philosophy, and gender studies of science, Sarah S. Richardson uncovers how gender has helped to shape the research practices, questions asked, theories and models, and descriptive language used in sex chromosome research. From the earliest theories of chromosomal sex determination, to the mid-century hypothesis of the aggressive XYY supermale, to the debate about Y chromosome degeneration, to the recent claim that male and female genomes are more different than those of humans and chimpanzees, Richardson shows how cultural gender conceptions influence the genetic science of sex. Richardson shows how sexual science of the past continues to resonate, in ways both subtle and explicit, in contemporary research on the genetics of sex and gender. With the completion of the Human Genome Project, genes and chromosomes are moving to the center of the biology of sex. Sex Itself offers a compelling argument for the importance of ongoing critical dialogue on how cultural conceptions of gender operate within the science of sex.
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