Bøger af Nettie Maria Stevens

This groundbreaking work on genetics and reproductive biology provides detailed analysis of the process of spermatogenesis in insects. With a focus on the role of the accessory chromosome in sex determination, Studies in Spermatogenesis offers new insights into the mechanisms of inheritance. Written by pioneering scientist Nettie Maria Stevens, this book is an important historical reference for researchers and students of genetics and biology.This work has been selected by scholars as being culturally important, and is part of the knowledge base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 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.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.

In this groundbreaking study, pioneering geneticist Nettie Maria Stevens explores the embryology of the planarian worm. Through a series of experiments, she discovered that sex was determined by the presence of a particular chromosome, known as the X and Y chromosomes. This work revolutionized the field of genetics and helped pave the way for future breakthroughs in the study of human development. This book is a must-read for anyone interested in the history of science and genetics.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 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.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.

Drawing upon meticulous research and detailed observation, Nettie Maria Stevens' studies of ciliate infusoria Licnophora and Boveria provide groundbreaking insights into their physiology and life cycles. Her findings have paved the way for new understanding of the evolution and behavior of microorganisms, and this book is essential reading for anyone interested in the field of microbiology.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 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.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.

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.