Project Gutenberg 2010-03-07 Public domain in the USA. 154 Stevens, N. M. (Nettie Maria) 1861 1912 Stevens, Nettie Maria Studies in Spermatogenesis (Part 2 of 2) Reading ease score: 55.1 (10th to 12th grade). Somewhat difficult to read. Produced by Bryan Ness, Josephine Paolucci and the Online Distributed Proofreading Team at https://www.pgdp.net. (This file was produced from images generously made available by The Internet Archive/American Libraries.) "Studies in Spermatogenesis (Part 2 of 2)" by N. M. Stevens is a scientific publication written in the early 20th century, specifically in 1906. This work primarily focuses on a comparative analysis of heterochromosomes in various insect orders, including Coleoptera, Hemiptera, and Lepidoptera, with a particular emphasis on their implications for sex determination. The book represents an important contribution to the field of genetics and entomology by portraying the intricacies of sperm cell development and chromosomal behavior. The content of the book explores and documents the spermatogenesis processes across different species of insects. Stevens examines the number and morphology of chromosomes during various stages of cell division, highlighting the distinct behaviors of heterochromosomes and their role in sex determination. With detailed descriptions and illustrations, the publication delineates the methods employed for observing these cellular processes, compares findings across species, and discusses how chromosomal arrangements relate to the biological understanding of gender within these insect taxa. The findings reinforce the notion that spermatozoa can differ significantly in composition, thereby contributing to the wider discourse on genetic inheritance and sexual differentiation in organisms. (This is an automatically generated summary.) en Sex Spermatogenesis QL Text Browsing: Health & Medicine Browsing: Science - General Browsing: Sexuality & Erotica 122302 122297 2025-01-13T05:03:50.524938 2023-09-14T04:46:24.950971 text/html text/html 119044 2021-01-06T06:38:52 text/html; charset=iso-8859-1 959359 2021-01-06T06:38:53 text/html; charset=iso-8859-1 application/zip 1107449 2025-01-13T05:03:57.645908 application/epub+zip 1107267 2025-01-13T05:03:54.161943 application/epub+zip 103165 2025-01-13T05:03:52.783926 application/epub+zip 1277604 2025-01-13T05:04:00.102887 application/x-mobipocket-ebook 1259622 2025-01-13T05:03:56.712909 application/x-mobipocket-ebook 244772 2022-09-14T12:34:19.606745 application/x-mobipocket-ebook 102690 102461 2025-01-13T05:03:49.983931 2023-09-14T04:46:23.785977 text/plain; charset=us-ascii text/plain 102326 2021-01-06T06:38:52 text/plain; charset=iso-8859-1 31820 2021-01-06T06:38:52 text/plain; charset=iso-8859-1 application/zip 102408 2021-01-06T06:38:52 text/plain; charset=us-ascii 31776 2021-01-06T06:38:53 text/plain; charset=us-ascii application/zip 22100 2025-01-13T05:04:00.229886 application/rdf+xml 17651 2025-01-13T05:03:53.315910 image/jpeg 3976 2025-01-13T05:03:53.046922 image/jpeg 1105075 2025-01-13T05:03:50.561929 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://www.gutenberg.org/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia