Bio3400 1nd Edition Lecture 10 Outline of Last Lecture I Selection II Mutation III Gene flow IV Genetic drif V The Founder Effect VI The Bottleneck Effect Outline of Current Lecture I Genetic drif II Collared lizards III Multilocus genotype Current Lecture I Genetic Drif a What factor is most important in determining how important drif will be in a population i Sampling error tends to be greater in smaller samples ii Large deviations from the expected frequencies are more likely b Collared Lizards in the Missouri Ozarks i Ozarks were part of the desert of the American Southwest 8 000 4 000 years ago ii Collard lizards expanded their range into MO iii As the climate changed Ozarks became savannah habitat with isolated glades iv With human colonization and fire suppression the Ozarks are not largely oak hickory forest v With forestation glades became smaller 1 Each have a few dozen lizards These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute vi Lizards are not capable of moving between populations separated by dense forest vii What do we expect to happen in these populations 1 Within populations 2 Between populations viii Templeton performed multilocus genotyping 1990 1 Most glade populations were fixed for one multilocus genotype 2 Different populations tended to be fixed for different genotypes 3 What determined which genotype fixed in each population 4 What is the evolutionary potential in each population 5 What do you think will happen to collard lizard populations over time
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