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Darwin’s revolution Darwin’s revolution • One of the most famous quotes in modern biology: • “Nothing in biology makes sense except in the light of evolution.” • Theodosius Dobzhansky 1973. (19001975) Darwin’s revolution • Evolution provides the unifying principle that underlies all of biology • In terms of the scientific method; support for this hypothesis comes from many observatiosn and experiments • Which is why this is called now, a theory of evolution Supporting evidence • • • • • Biogeography Fossils Comparative anatomy Comparative embryology Genetics and molecular biology Darwin’s revolution • • • • When conditions are right, species change Peppered moths (1760 in England) Bacteria (resistance to antibiotics) Insect pests (resistance to pesticides)