Project Gutenberg 2011-06-25 Public domain in the USA. 1449 Darwin, Charles 1809 1882 Darwin, Charles Robert The Descent of Man and Selection in Relation to Sex, Vol. II (1st Edition) Transcription of 1871 edition. Wikipedia page about this book: https://en.wikipedia.org/wiki/The_Descent_of_Man,_and_Selection_in_Relation_to_Sex E-text prepared by Steven Gibbs, Turgut Dincer, and the Online Distributed Proofreading Team "The Descent of Man and Selection in Relation to Sex, Vol. II" by Charles Darwin is a scientific publication written in the late 19th century. This work extends Darwin's theory of evolution by exploring the role of sexual selection in the evolution of species, detailing variations between male and female traits in the animal kingdom. It delves into the fascinating differences in characteristics across various species, such as fishes, amphibians, reptiles, birds, and mammals, particularly highlighting how and why these traits might have developed. The opening of the volume introduces themes of sexual selection while focusing on the secondary sexual characteristics of fishes, amphibians, and reptiles. It discusses examples of courtship behaviors and physical traits that differentiate males from females. For instance, male fishes are often more brightly colored and engage in elaborate courtship rituals, while the females may exhibit duller colors primarily for protection. The text notes how these variations can impact reproductive success, emphasizing the role of female choice and mate competition among males. This sets the stage for a broader exploration into the evolutionary significance of sexual selection throughout the animal kingdom. (This is an automatically generated summary.) Reading ease score: 72.5 (7th grade). Fairly easy to read. en Evolution (Biology) Human beings -- Origin Sexual selection in animals Sexual dimorphism (Animals) Sex differences QH Text Category: Science - Biology 1794964 2025-08-15T04:03:16.550938 text/html 1640337 2011-06-25T15:45:55 text/html 3820424 2025-08-15T04:03:53.237267 application/epub+zip 3832923 2025-08-15T04:03:27.592369 application/epub+zip 548629 2025-08-15T04:03:21.535395 application/epub+zip 2789362 2025-08-15T04:04:08.155177 application/x-mobipocket-ebook 2712551 2025-08-15T04:03:48.001302 application/x-mobipocket-ebook 1200328 2022-09-16T16:00:19.994856 application/x-mobipocket-ebook 1050538 2025-08-15T04:03:11.198943 text/plain; charset=us-ascii 1050273 2011-06-25T15:40:48 text/plain; charset=us-ascii 1043760 2011-06-25T15:40:47 text/plain; charset=us-ascii 1044187 2011-06-25T15:40:48 text/plain; charset=us-ascii 22978 2025-08-15T04:04:08.352171 application/rdf+xml 24433 2025-08-15T04:03:22.863398 image/jpeg 4574 2025-08-15T04:03:22.212417 image/jpeg 349510 2011-06-25T15:40:48 application/octet-stream application/zip 348238 2011-06-25T15:40:48 application/octet-stream application/zip 3124094 2011-06-25T15:52:02 application/octet-stream application/zip 348025 2011-06-25T15:40:48 application/octet-stream application/zip 3280473 2025-08-15T04:03:16.774985 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia