BIOL165 Study Guide - Midterm Guide: Charophyta, Brown Rat, Archegonium
26 Apr 2017
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5 shows time scale of geological history of earth: different time periods determined through relative dating and fossils, boundaries of eras and periods often defined by major extinctions, ex. Permian-triassic boundary most severe extinction on earth: ex. Life must have evolved quickly once conditions permitted: one of the many hypotheses regarding origin of life, sterile earth, prebiotic synthesis of organic molecules, polymerization of nucleotides to form rna, self-replicating rna. Biol 165 notes: numerical breakdown of species known on earth, total number of species known: 1. 7 m. Phylogenetic trees and cladograms diagrams pgs. Vertebrae is a synapomorphy that defines vertebrates among all other animals that do not have a vertebrae: plesiomorphy: primitive trait that is common, ex. 19: rule of parsimony: solution with fewest number of steps is searched for, ex. Domains and kingdoms: whitaker"s five ki(cid:374)gdo(cid:373)s, consists of: monera, protista, plantae, fungi, animalia, 5-k scheme is paraphyletic and was proposed before all the recent nucleic acid data was published.
