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by: Maddsmurr

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About this Document

nothing really
Daniel Ervin
Class Notes
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This 2 page Class Notes was uploaded by Maddsmurr on Wednesday February 17, 2016. The Class Notes belongs to Geog 5 at University of California Santa Barbara taught by Daniel Ervin in Winter 2016. Since its upload, it has received 16 views. For similar materials see PEOPLE, PLACES, AND ENVIRONMENT in Geography at University of California Santa Barbara.


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Date Created: 02/17/16
Second Half of Quarter (EEMB-2) Professor: Bill Rice Specialization: Evolutionary Genetics Dr. Rice’s Lectures Office Hours: Tu 1:00-2:00 Th the hour after class Office location: 4103 Life Sciences Building All my lecture notes: listed on the web the day after class 1) as presented in class (as a slide show) 2) in condensed form for studying Also class handout (day of class) Weekly study questions:▯ Posted each Friday ▯ ▯ ▯ -answers posted same day Final exam: same format as midterm Covers only the last 5 Date of exam as in catalog weeks of class ▯ (March 16; noon-3:00PM) Text Book Life, The Science of Biology by Sadava, Study Questions Hillis, Heller & Berenbaum (10th Edition) 6 Evolution Dr. Rice’s On-line Quizzes To proceed further we are going to carry out a simple thought Fitness = The number of genome copies an experiment. ▯ ▯ organism places into the next generation. RESOURCE BUDGET ▯▯ S S▯▯T I F ▯| ▯▯ A▯ | 4/10 = 0.4▯ F P This phenotype has equal Investment in all 3 functions ▯▯ B▯ | 9/10 = 0.9▯ G ▯▯ C▯ | 8/10 = 0.8▯ ▯▯ D▯ | 20/10 = 2.0▯ ▯▯ E▯ | 20/10 = 2.0▯ P F G This phenotype invest mainly in fecundity ▯▯ ▯ ▯ Changes in the relative ▯ Process of▯▯ ▯ frequencies of different SPRING PHENOTYPE SUMMER FECUNDITY FALL Natural Selection:▯▯ genotypes (genes) due SEEDS PLANTS SEEDS F 2 SEEDS ▯ ▯ ▯ ▯ ▯ to difference in the associated 10 A G P 2 LARGE 4 ▯ ▯ ▯ ▯ ▯ survival and fecundity of their / PLANT 10 B P F 9 SMALL 1 SEED 9 ▯ ▯ ▯ ▯ ▯ phenotypes. G /PLANT ▯ ▯ ▯ ▯ ▯ 4 SEEDS Suppose that a population of asexual plants was fixed (100%) for a 10 C F P 2 SMALL 8 G /PLANT genotype that produced cooperation against competitors other G 4 MEDIUM 5 SEEDS specie.) 10 D F P /PLANT 20 It released an energetically expensive toxin into the air that poisoned competitors in its neighborhood G - 4 SEEDS 10 E P F 5 MEDIUM /PLANT 20 100% genotype-A producing Phenotype = altruist Next a mutant genotype-C appears that does not produce the costly toxin 50 = TOTAL TOTAL = 61 but benefits from the toxin produced by its neighbors (Phenotype = cheater) Which phenotype is best for the species (altruist or cheater)? Some evolutionary geneticists consider phenotypes like you Gene pool = Abstract assemblage of all genes in a population. and me to be "throw-away survival machines" used by genes Gene Frequency to transport themselves from one generation to the next. Gene generation = 1 generation = 2 A 10/50 = 0.2 4/61 = 0.06 B 10/50 = 0.2 9/61 = 0.15 Gametes Zygotes Phenotypes C 10/50 = 0.2 8/61 = 0.13 (Genes) (Organisms) D 10/50 = 0.2 20/61 = 0.33 E 10/50 = 0.2 20/61 = 0.33


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