What Evolution IsAt once a spirited defense of Darwinian explanations of biology and an elegant primer on evolution for the general reader, What Evolution Is poses the questions at the heart of evolutionary theory and considers how our improved understanding of evolution has affected the viewpoints and values of modern man.Science Masters Series |
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able acquired adapted Africa ancestors animals answer apes apparently bacteria basic become behavior believed biology birds body brain branching called caused cell chance Chapter characteristics characters chromosomes common complete concept considered consist continuous Darwin Darwinian descendants early elimination entirely environment eukaryotes evidence evolution evolutionary evolved existence explained extinction fact FIGURE forms fossil function genes genetic genotype gradual higher highly Homo human important increase individuals instance isolated kinds later lead less lineages living major mammals mechanisms million million years ago molecular mutation natural selection niche occur organisms origin parental particularly period phenotype phyla plants population present produced progress question range reason record referred reproduction result seems sexual sexual reproduction showed similar single Source speciation species stages step structure successful taxa theory thinking tion tree understanding usually variation whole