BIL 160 Lecture Notes - Lecture 1: Panmixia, Genetic Drift, Tree-Kangaroo
28 Apr 2016
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Document Summary
Pattern 0: extraordinary interspecific variations (life is very diverse) Pattern 1 (tree of life: closely related species are slight modifications of one another, all life on earth can be reconstructed by a series of slight modifications of form. Humans differ from one another by 0. 1% Organisms tend to be very well designed to live in their environment. Galapagos finches (darwin: same birds on different islands were adapted for different food. Praying mantis camo to hide in their environment. Organisms not perfectly designed (numerous design flaws and defects: design via modification of existing structures forces there to be many design compromises that wouldn"t occur if you could build species from scratch. Evolution with common descent is the only theory that explains and predicts all the known patterns of life. We can also directly observe evolution is action. Microevolution: patterns and processes of evolution within a species. Its pattern is genetic and phenotypic variation within species.
