Biology 11
Mr Carmichael
Name: ____________________ Date: __________ Block: _____
Chapter 3 – Theories to Explain Variation
Read pages 90-104. Use the text, sidebars, and illustrations to answer the questions below:
| What is the purpose of scientific theories?
What do the theories of evolution attempt to explain?
Describe the theory of Jean-Baptiste de Lamarck
What is the main contribution of Lamarck to modern evolutionary theory?
Describe the theory of Charles Darwin
What is adaptation?
What are the three main types of adaptation? For each one, give three examples.
What is gradualism?
What is punctuated equilibrium?
Describe two causes of rapid evolution
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