Chapter 19 - Chapter 19 Development of Evolutionary Thought...

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Chapter 19: Development of Evolutionary Thought Biological evolution occurs in populations when specific processes cause the genomes of organisms to differ from those of their ancestors. Genetic changes and the phenotypic modifications they cause are the products of evolution. By studying the products of evolution, biologists strive to understand the processes that cause evolutionary change. Europeans integrated ideas from ancient Greek philosophy into Christian doctrine o Aristotle-first student of natural history (branch that examines the form and variety of organisms in their natural environments) Both inanimate objects and living species had fixed characteristics Scala Natura (Great Chain of Being) Careful study of their differences and similarities enabled him to create a ladder-like classification of nature from simplest to most complex forms: MINERALS PLANTS ANIMALS HUMANS GODS OF THE SPIRITUAL REALM. o 14 th century—biblical account of creation: all of the different kinds of organisms had been specially created by God, species could never change or become extinct, and new species could never arise.
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  • Spring '09
  • LORENZ,T.C.
  • Evolution, Evolutionary Change, Comparative Morphology, o Historical biogeography o Comparative morphology o Comparative embryology o Comparative molecular biology

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