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Environmentalist Thesis and Hereditarian Antithesis
Equal but Dissimilar
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ability achondroplastic adaptive Africa alleles ancestors animals apes australopithecines average become behavior biological blood groups blood types body brain carriers caste cent century changes Chapter chromosomes classical cotwins culture Darwin Darwinian fitness diabetes dominant Drosophila environment environmental equality of opportunity Europe evidence evolutionary existence fact favored females fossil fraternal twins frequencies gene pool genetic endowment genetic load genetically conditioned genotypes heredity heritability heterozygotes heterozygous Homo erectus Homo sapiens homozygotes homozygous human evolution human populations human species hypothesis identical twins increase individuals inheritance intelligence least less living males man's mankind mating mean Mendelian populations ment mental modern mutation rate natural selection Negroes normal number of children observed occur organism pairs parents perhaps persons phenotype polygenes polymorphism probably produced progeny recessive recessive gene relatively reproductive schizophrenia sex cells sexual siblings skin color social society somatotype spermatozoon survive Table theory tion traits variable variations