genetic drift
Genetic Drift in Genetic Algorithm Selection Schemes
... ENETIC drift is a term borrowed from population ge- netics where it is used to explain changes in gene fre- quency through random sampling of the ...in genetic algorithms (GA) due to the stochastic nature ...
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Neutral genetic drift can alter promiscuous protein functions, potentially aiding functional evolution
... neutral genetic drift under a fixed selection criterion can be viewed as sampling underlying "equilibrium" dis- tributions of ...neutral genetic drift or selection has explicitly ...
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Evolutionary dynamics of genetic variation in Epstein-Barr virus isolates of diverse geographical origins: evidence for immune pressure-independent genetic drift.
... Determination whether selection by the CTL response has played a role in the emergence of variant viruses requires either the direct demonstration of fitness differences between variants or an indirect approach ...
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Simultaneous Estimation of Mixing Rates and Genetic Drift Under Successive Sampling of Genetic Markers With Application to the Mud Crab (Scylla paramamosain) in Japan
... of genetic drift cannot be ignored. If the effect of genetic drift is large, actual haplotype or allele frequencies in the natural popula- tion, regarded as a baseline population, are ...
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Testing validity inferences for Genetic Drift Inventory scores using Rasch modeling and item order analyses
... the Genetic Drift Inventory ...of genetic drift within evo- lution education, continue with an overview of Classical Test Theory and Item Response Theory frameworks for instrument evaluation, ...
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A Conservative Test of Genetic Drift in the Endosymbiotic Bacterium Buchnera: Slightly Deleterious Mutations in the Chaperonin groEL
... The obligate endosymbiotic bacterium Buchnera aphidicola shows elevated rates of sequence evolution compared to free-living relatives, particularly at nonsynonymous sites. Because Buchnera experiences population ...
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Serial Founder Effects During Range Expansion: A Spatial Analog of Genetic Drift
... Previous work on the effects of surfing has emphasized that surfing can drive some initially rare alleles to high frequency (Travis et al. 2007; Hallatschek and Nelson 2010; Hallatschek 2011). The probability that an ...
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Adaptive Fixation in Two-Locus Models of Stabilizing Selection and Genetic Drift
... quantitative genetic models in which selection is assumed to operate on a polygenic trait predict adaptive fixations that may lead to footprints in the genome (selective ...without genetic drift) by ...
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Students’ Mental Models of Evolutionary Causation: Natural Selection and Genetic Drift
... These earlier debates were revived with Kimura ’ s (1968) finding of a high rate of neutral mutation; such empirical findings provided support for stochastic causal contributors (e.g., genetic drift) to ...
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Time-Sampled Population Sequencing Reveals the Interplay of Selection and Genetic Drift in Experimental Evolution of Potato Virus Y
... narrow genetic bottleneck observed in the 5th passage of our experiment in most of the evolutionary lineages enabled us to further investigate patterns of evolu- tion by observing an interesting interplay between ...
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Influence of Random Genetic Drift on Human Immunodeficiency Virus Type 1 env Evolution During Chronic Infection
... size for a haploid organism, and is the mutation rate per In this study, we explored the related issues of the generation per site with L sites. Under the same assumptions, viral effective population size and the roles ...
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Observing populations and testing predictions about genetic drift in a computer simulation improves college students’ conceptual understanding
... In the control courses instructors taught genetic drift as they normally would, through combinations of read- ings from the text, homework, lecture, discussion, and in-class activities. The control group ...
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Did RNA editing in plant organellar genomes originate under natural selection or through genetic drift?
... The most difficult part of the RNA editing story to explain is the lineage-specific occurrence of a good number of editing sites, as many of them seem to have evolved rather recently [7, 13, 26, this study]. Colonization ...
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Testing Natural Selection vs. Genetic Drift in Phenotypic Evolution Using Quantitative Trait Locus Data
... difference is adaptive by looking at the genes involved? The problem can be restated as follows. Under neutral The idea is simple. Imagine that two plant varieties evolution, we predict some distribution of phenotypic ...
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Pattern formation through genetic drift at expanding population fronts
... of genetic drift acting at the leading edge of range expansions, building on recent results in [Hallatschek et ...by genetic drift gives rise to sectoring patterns with fractal boundaries, ...
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Complete Numerical Solution of the Diffusion Equation of Random Genetic Drift
... random genetic drift has been in existence for a considerable period of ...random genetic drift in genetics and related subjects, wherever the diffusion equation ...
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Effects of Genetic Drift and Gene Flow on the Selective Maintenance of Genetic Variation
... Measures of pairwise selection strength (s) between the genotypes indicate how much variation exists within the fitness sets of the single or two-deme models, normalized by the highest genotypic fitness in a particular ...
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Genetic Drift in an Infinite Population: The Pseudohitchhiking Model
... similar across species than would be the case under There is a much more intriguing, though largely un- genetic drift. If there were some correlation across explored, source of linked perturbations: meiotic ...
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Random Genetic Drift and Gamete Frequency
... Let c be the recombination fraction between the two loci, and we set r ¼ 4Nc. We do not discuss where c ¼ 0, since the problem reduces to the multiallelic one-locus problem that has previously been discussed by K imura ...
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Cytonuclear Disequilibrium and Genetic Drift in a Natural Population of Ponderosa Pine
... to drift: Cytonuclear disequilibria can crosses ...little genetic differentiation among populations of with existing knowledge of the population (Latta et ...neutral genetic drift or cpDNA ...
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