092107_GeneticVariation

092107_GeneticVariation - Intro to Organismal Biology Grade...

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9/21/2007 1 9/21/07 Intro to Organismal Biology 9/21/07 0 1 2 3 4 5 6 7 8 9 10 1 3 5 7 9 11 13 15 17 19 21 23 25 Frequency Quiz Score (out of 25) Grade Distribution for Quiz #1 Announcements 3 Reminder: Biology Department Survey Lab 2 Assignments due next week: 1. (see syllabus): -One outside article required; staple copy of article at the end -Upload file to Turn-it-in folder under “Assignments” on Blackboard AND hand in paper copy to lab 2. Figures & Stats (listed at end of lab in manual) Today’s class Preserving genetic variation Ways to maintain population genetic variation Origin of species and macroevolution Defining species (Relevant reading: end of Ch. 23, start of 24) 4 Preserving genetic variation Different ways of maintaining population genetic variation: Diploidy Balancing selection (polymorphism) Neutral variation Sexual selection 5 Preserving genetic variation Diploidy : recessive alleles “hidden” from selection in heterozygotes 6
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This note was uploaded on 04/17/2008 for the course BIOL 161 taught by Professor Vanroo during the Fall '08 term at Mass Colleges.

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092107_GeneticVariation - Intro to Organismal Biology Grade...

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