02457cam a22003373u 450000100060000000300070000600500170001300600020003000700050003200800410003704000110007804100170008905000070010610000280011324501140014124601110025526400510036630000470041733600260046433700260049033800360051650000310055250801160058352012690069953400450196865300190201365300140203265300130204685600430205999900170210249775UtSlPG20260610134138.0mcr n260607r2015||||utu|||||o|||||||||||||| d  aUtSlPG 7ade2iso639-1 4aQH1 aLenz, Fritz,d1887-197610aGrundriß der menschlichen Erblichkeitslehre und Rassenhygiene (2/2) :bMenschliche Auslese und Rassenhygiene1 aGrundriss der menschlichen Erblichkeitslehre und Rassenhygiene (2/2)
Menschliche Auslese und Rassenhygiene 1aSalt Lake City, UT :bProject Gutenberg,c2015  a1 online resource :bmultiple file formats  atextbtxt2rdacontent  acomputerbc2rdamedia  aonline resourcebcr2rdacarrier  aRelease date is 2015-08-24  aProduced by Norbert H. Langkau, Reiner Ruf, and the Online
Distributed Proofreading Team at http://www.pgdp.net  a"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.)  nOriginal publication data not identified  aHuman genetics  aEthnology  aEugenics40uhttps://www.gutenberg.org/ebooks/49775  c90613d90613