Chapter 17 Notes

Chapter 17 Notes - Darwin and Evolution Charles Darwin...

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Darwin and Evolution Charles Darwin – aboard British naval vessel HMS Beagle; mission – expand the navy’s knowledge of natural resources (water and food) in foreign lands; amassed observations that would eventually support another way of thinking and change the history of biology and science forever Robert Fitzroy – captain of Beagle; hoped Darwin would find evidence to support biblical account of creation Pre Darwinian View 1. Earth is relatively YOUNG – measured in thousands of years 2. Each species is specifically created; species DON’T change, number of species remain SAME 3. ADAPTATION to environment is the work of a creator; variations are IMPERFECTIONS 4. OBSERVATIONS are supposed to substantiate prevailing worldview Post Darwinian View 1. The Earth is relatively OLD – measured in billions of years 2. Species are related by DESCENT – possible to piece together history of life on Earth 3. ADAPTATION to environment is the interplay of random variations and environmental conditions 4. OBSERVATION and EXPERIMENTATION are used to test hypotheses, including hypotheses about evolution Lyell – wrote Principles of Geology
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