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Unformatted text preview: Change over time in patterns of variation and patterns of diversity. Examples: organisms common 500 mya no longer around; likewise dinosaurs; organisms common now not found long ago BIOEE 2780 Lecture 2 2 Evolution is both fact and theory. Change over time, descent with modification, evolution by natural selection. Questions biologists ask. Descriptive, mechanistic (What is it? How does it work?) Comparative (How do structure/function vary among taxa?) Historical (How did it come to be this way?) “Nothing in biology makes sense except in the light of evolution.” (Theodosius Dobzhansky). An evolutionary perspective provides insights at all levels of biological organization....
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- Fall '07
- Evolution, good fit, Evolutionary Biology and Diversity, Harrison lab organisms