BIOLOGY 1M03 Lecture Notes - Lecture 1: Louis Pasteur, Phylogenetic Tree, Robert Hooke
20 Dec 2015
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Chapter 1: biology and the tree of life jstoner@mcmaster. ca. The theory of evolution by natural selection involves the idea that species change through time because individuals with particular heritable traits survive and produce more offspring than do other individuals. Cell theory, involves the idea that all organisms comprise of cells and that al cells derive from pre-existing cells: all organisms are made up of cells, and cells derive from existing cells. Not only pass on this material and continue lineage, but rather produce viable off spring. Quality and quantity are not always equivalent. Phylogenetic tree: a diagram that may be interpreted as representing inferred evolutionary relationships among species: simplified: surmised data in which details the evolutionary relationship between organisms displayed. Phylogenies: can be established by analyzing similarities (and differences) in traits: species that share distinctive traits are situated in topological proximity in topological proximity on phylogenic trees.
