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Lecture video
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Lecture notes
Biology and the Tree of Life
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Core ideas from the lecture
- Life shows order, reproduction, growth and development, energy use, response, homeostasis, and adaptation.
- A theory explains a general phenomenon; a hypothesis explains a specific one.
- Good experiments need a control group, controlled conditions, and repeatability.
- Louis Pasteur's swan-neck flask experiment supported the idea that cells come from pre-existing cells.