Evolutionary Bio Test 3 Week 1
Evolutionary Bio Test 3 Week 1 12050 - BIOL 3350 - 001
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This 2 page Class Notes was uploaded by Adam Rodenberg on Saturday March 5, 2016. The Class Notes belongs to 12050 - BIOL 3350 - 001 at Clemson University taught by Dr. Michael Sears in Spring 2016. Since its upload, it has received 26 views. For similar materials see Evolutionary Biology in Biological Sciences at Clemson University.
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Date Created: 03/05/16
Evolutionary Bio Test 3 Week 1 This set of notes includes everything Dr. Sears covered in class plus all of the vocabulary and major notes from the textbook from this week. 3/3 Posttest talk Textbook Vocab Ch. 9 Quantitative genetics branch of evolutionary biology that provides tools for analyzing the evolution of multilocus traits Qualitative traits traits that allows characters to be qualified by looking at them Quantitative traits characters with continuously distributed phenotypes Quantitative trait loci (QTLs) portions of the genome that influence quantitative traits QTL mapping the collective name for a suite of related techniques that employ marker loci to scan chromosomes and identify regions containing genes that contribute to a contribute to a quantitative trait Heritability the fraction of the total variation in a trait that is due to variation in genes Phenotype variation (V )Ptotal variation in a trait Genetic variation (V )G variation among individuals due to variation in their genes Environmental variation (V )Eariation among individuals due to variation in their environments Heritability equation (BroadSense heritability) V /V =(V /V +V ) G P G G E Midparent value the average of the parents Midoffspring average of the offspring (if more than 1) Narrowsense heritability the ratio of additive genetic variance to the total phenotypic variance Directional selection when fitness consistently increases(or decreases) with the value of a trait Stabilizing selection when individuals with intermediate values of a trait have highest fitness Disruptive selection when individuals with extreme values of a trait have the highest fitness
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