'Effective population size' diaporamas de présentation

Evolutionary Mechanisms

Evolutionary Mechanisms. Genetic Drift (and Inbreeding). Sources of Genetic Variation. Mutation generates genetic variation Epigenetic modification changes expression of genes Genetic Drift causes fluctuations in allele frequencies and can reduce genetic variation. Natural Selection.

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Genetic Epidemiology M. Tevfik DORAK dorak/epi/genetepi.html

Genetic Epidemiology M. Tevfik DORAK http://www.dorak.info/epi/genetepi.html. Approaches to the identification of susceptibility genes Rebbeck TR. Cancer 1999 ( www ). Palmer LJ. Webcast ( www ). GENETIC EPIDEMIOLOGIC RESEARCH METHODS.

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Conservation Biology & Global Change

Conservation Biology & Global Change. Campbell & Reece Chapter 56. Conservation Biology. integrates ecology, physiology, molecular biology, genetics, & evolutionary biology to conserve biologic diversity at all levels. 3 Levels of Biodiversity. Genetic Diversity Species Diversity

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Inbreeding

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Dr. Joseph L. Graves, Jr. Dean, University Studies & Professor of Biological Sciences, North Carolina A& T State

The Meaning of Race in Medicine 12 th Annual Summer Public Health Research Videoconference on Minority Health University of North Carolina at Chapel Hill School of Public Health June 26, 2006. Dr. Joseph L. Graves, Jr.

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Modeling the Origin and Migration of Human Populations

Modeling the Origin and Migration of Human Populations . Michael E. Palmer. Overview. History Some Population Genetics origins of genetic variation evolutionary timescales selection and drift neutral theory Detection of Selection in Humans with SNPs Some more Population Genetics

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Characterisation and Community-based Management of Farm Animal Genetic Resources in the Mixed Crop-livestock Farming Sy

Characterisation and Community-based Management of Farm Animal Genetic Resources in the Mixed Crop-livestock Farming System in Benin. By Hippolyte Dossa. PhD Project Proposal. Background. Total area: 112,620 km2 Arable land: 15% Human population: 7,0 m (Census 2002).

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Announcements

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Evolution

Evolution. The process of change in the genetic makeup of populations. The basis of the change is change in gene frequencies over time. How the frequency of a mutant allele change in time under various evolutionary forces. Population.

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Codon Usage

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Two paradigms for conservation biology

Two paradigms for conservation biology. What is the best way to understand (and correct) species declines?. Caughley 1994 Small population paradigm Declining population paradigm. The small population paradigm. population consequences of rareness and smallness

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Is the CFTR allele maintained by mutation/selection balance?

Is the CFTR allele maintained by mutation/selection balance?. In some populations: Freq of Cystic Fibrosis: 2% Under mutation/selection balance, need: m = 4 x 10 -4 However the actual rate is 6.7 x 10 -7 too low!. Cultured mouse cells with CFTR genotypes . The fitness cost

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Chapter 55

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Hardy-Weinberg equilibrium

Hardy-Weinberg equilibrium. if p = frequency of allele A q = frequency of allele a p + q = 1, ( p + q ) 2 = 1 p 2 + 2pq + q 2 = 1 if only law of probability affects the frequency w/ which gametes combine to form new individuals. Bisexual population

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Evolution by Genetic Drift : Main Points (p. 231)

Evolution by Genetic Drift : Main Points (p. 231). Allele frequencies fluctuate at random within a population; eventually, one or another allele becomes fixed. 2. Genetic variation at a locus declines and is eventually lost; the rate of decline in heterozygosity is used to estimate the

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Problems of Island Existence: Conditions on the Hawaiian Archipelago and Other Oceanic Islands

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Population Genetic

Population Genetic. Hardy-Wienberg Law Genetic drift Inbreeding Genetic Bottleneck Outbreeding Founder event Effective population size Gene flow. Population Genetics. Genotype, phenotype locus, genotype frequency, allele frequency. Determining the genotype for an enzyme in a fish.

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Fertility Variation and Gene Diversity in Seed Crops of Eucalyptus and Casuarina Seedling Seed Orchards in Southern

Materials and Methods

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