Project Gutenberg 2015-08-24 Public domain in the USA. 271 Lenz, Fritz 1887 1976 Grundriß der menschlichen Erblichkeitslehre und Rassenhygiene (2/2) Menschliche Auslese und Rassenhygiene Grundriss der menschlichen Erblichkeitslehre und Rassenhygiene (2/2) Menschliche Auslese und Rassenhygiene Produced by Norbert H. Langkau, Reiner Ruf, and the Online Distributed Proofreading Team at http://www.pgdp.net "Grundriß der menschlichen Erblichkeitslehre und Rassenhygiene (2/2)" by Fritz Lenz is a scientific publication written in the early 20th century. This work serves as a comprehensive examination of human heredity and racial hygiene, delving into the biological and social aspects of selection within human populations. The text discusses various themes including the concepts of natural selection, fertility selection, and the implications of diseases on the human gene pool. The opening of this work introduces the topic of biological selection, explaining the existence of hereditary differences within human populations that impact reproductive success. Lenz outlines how natural selection operates in both wild and cultivated human groups, emphasizing that not all individuals reproduce equally. He introduces key concepts such as fertility selection and negative versus positive selection processes, arguing that these factors significantly shape the genetic landscape of societies. As Lenz builds his discussion, he underscores the interplay between genetic predispositions and environmental challenges, laying the groundwork for deeper examinations of human health and societal implications later in the text. (This is an automatically generated summary.) Reading ease score: 63.1 (8th & 9th grade). Neither easy nor difficult to read. de Human genetics Ethnology Eugenics QH Text Category: Science - Biology 827433 2025-07-20T05:04:35.587956 text/html 796130 2024-10-24T17:55:13 text/html 397339 2025-07-20T05:04:47.951817 application/epub+zip 437890 2025-07-20T05:04:37.619869 application/epub+zip 387720 2025-07-20T05:04:36.604885 application/epub+zip 639168 2025-07-20T05:04:54.542760 application/x-mobipocket-ebook 659323 2025-07-20T05:04:46.806809 application/x-mobipocket-ebook 610226 2022-09-22T14:05:27.654484 application/x-mobipocket-ebook 708658 2025-07-20T05:04:34.155873 text/plain; charset=us-ascii 688760 2024-10-24T17:55:13 text/plain; charset=us-ascii 17089 2025-07-20T05:04:54.695764 application/rdf+xml 14400 2025-07-20T05:04:36.743865 image/jpeg 2807 2025-07-20T05:04:36.675873 image/jpeg 374586 2025-07-20T05:04:35.651832 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