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 Written by pioneering scientist Nettie Maria Stevens, this book is an important historical reference for researchers and students of genetics and biology.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.