[Article] Genetics and the survival of the unfit Adjust Share By Lucy Eisenberg, This article is only available as a PDF to subscribers. Download PDF Tags 20th century Eugenics Genetic disorders Genetics Heterosis Human evolution Mutation (Biology) United States More from Lucy Eisenberg The politics of cancer Scientists vs. animal lovers The conflict that never ends Adjust Share Close < Previous Issue | View All Issues | Next Issue > February 1966 < Previous Issue | View All Issues | Next Issue > Table of Contents Close