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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
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Biogeography
Fossils
Comparative anatomy
Comparative embryology
Genetics and molecular biology
Darwin’s revolution
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When conditions are right, species change
Peppered moths (1760 in England)
Bacteria (resistance to antibiotics)
Insect pests (resistance to pesticides)