02458cam a22003373u 4500 49775 UtSlPG 20260610134138.0 m cr n 260607r2015||||utu|||||o|||||||||||||| d UtSlPG de iso639-1 QH 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 Salt Lake City, UT : Project Gutenberg, 2015 1 online resource : multiple file formats text txt rdacontent computer c rdamedia online resource cr rdacarrier Release date is 2015-08-24 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.) Original publication data not identified Human genetics Ethnology Eugenics https://www.gutenberg.org/ebooks/49775 90613 90613