Labels:bulletin board | reckoner | window OCR: For the next two centuries those ideas were subiected to increasingly severe criticism and ir the mid- 19th century two important scientific advances set the stage for modern discussions of the origin of life In one advance Louis Pasteur discredited the concept 01 spontaneous generation He offered proof that even bacteria and other microorganisms arise from parents resembling themselves He thereby highlighted an intriguing question: How did the first generation of each species come into existence? The second advance the theory of natural selection suggested an answer. According to this proposal set forth by Charles Darwin and Alfred Russel Wallace some of the differences between individuals na population are heritable When the environment changes individuals bearing traits that provide the ...
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