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Environmentalist Thesis and Hereditarian Antithesis
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ability achondroplastic adaptive Africa alleles ancestors animals apes australopithecines average become behavior biological blood group blood types body brain carriers caste cent changes Chapter chromosomes correlation cotwins culture Darwin Darwinian fitness diabetes dominant Drosophila environment environmental equal Europe evidence evolutionary exist favored females fitness fossil fraternal twins frequencies gene pool genetic conditioning genetic endowments genetic load genotypes heredity heritability heterozygotes heterozygous Homo erectus Homo sapiens homozygotes homozygous human evolution human populations human species hypothesis identical twins individuals infants inheritance intelligence Kallmann kind language least less living male mankind mates mean Mendelian populations ment mental mutation mutation rate natural selection Negroes normal observed occur organism pairs parents perhaps persons phenotype pigmentation polygenes polymorphism possible primates probably produced progeny races recessive recessive gene relatively reproductive schizophrenic sex cells sexual siblings skin color social society somatotype stature Table theory tion traits variable variations