BIOLOGY 1M03 Lecture Notes - Lecture 2: Antonie Van Leeuwenhoek, Phylogenetic Tree, Organelle
22 Sep 2015
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Bio1m03 lecture 2 biology and the tree of life (chapter 1) 26136: email: jstoner@mcmaster. ca (however, use appropriate forum via discussions tool at the avenue to learn folder) Phylogenies (= tribe sources ) can be established by analyzing similarities (and differences) in traits. Species that share distinctive traits are situated in topological proximity on phylogenetic trees: biologists ask questions, generate hypotheses to answer them, and design experiments or make observations that test the predictions made by competing hypotheses. Where do cells come from: hypothesis is a proposal that a scientist comes up with, a predation is something that can be measured and must be correct if a hypothesis is valid. Louis pasteur demonstrated experimentally that calls arise from cells and not by spontaneous generation. In pasteur"s experimental setup, the two groups he involved differed in only the one factor that was being tested making it very effective.
