Bio 101, week 1 notes
Bio 101, week 1 notes BIO 101
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This 2 page Class Notes was uploaded by Alexis Notetaker on Saturday August 13, 2016. The Class Notes belongs to BIO 101 at Indiana State University taught by Steven L.Lima in Fall 2016. Since its upload, it has received 6 views. For similar materials see Biology 101 in Biology at Indiana State University.
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Date Created: 08/13/16
Biology 101 Week of 08/23/2016 What is Life? 1. Extract energy from environment. 2. Reproduction that involves replication of DNA. 3. Cells. 4. Regulate internal environment. Are viruses alive? Not a cell Don’t extract energy Don’t regulate Do replicate DNA/RNA and evolve Viruses are parasites of cells All Life has common origin All life is based on DNA What is the meaning of life? Surviving and reproducing What is science? A way of understanding the world A way to ask and answer questions Hypothesis An idea about how the world works Scientific Method 1.Observations 2.Hypothesis 3.Repeated experiments 4.Data 5.Conclusion Natural Selection A process with no fore thought Not trying to produce change Artificial Selection Evolutionary change caused by humans, with forethought - Dog breeds All steps in a possible evolutionary sequence has to be adaptive. Only population can evolve If there is no genetic variation in a biological trait, there can be no evolutionary response to natural selection Fitness is the ability to survive and relations to others in a population Mutations are the source of all genetic variation
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