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Fixation in Conditional Branching Process Models in Population Genetics [PDF]

open access: bronzeJournal of Applied Probability, 2007
An alternative version of the necessary and sufficient condition for almost sure fixation in the conditional branching process model is derived. This formulation provides an insight into why the examples considered in Buckley and Seneta (1983) all have the same condition for fixation.
Thomas A. Prince, N. C. Weber
semanticscholar   +5 more sources

Active information requirements for fixation on the Wright-Fisher model of population genetics. [PDF]

open access: closedBIO-Complexity 2020(4):1-6, 2021
In the context of population genetics, active information can be extended to measure the change of information of a given event (e.g., fixation of an allele) from a neutral model in which only genetic drift is taken into account to a non-neutral model that includes other sources of frequency variation (e.g., selection and mutation).
Daniel Andrés Díaz–Pachón   +1 more
arxiv   +4 more sources

POPULATION GENETICS, PLEIOTROPY, AND THE PREFERENTIAL FIXATION OF MUTATIONS DURING ADAPTIVE EVOLUTION [PDF]

open access: bronzeEvolution, 2010
Ongoing debate centers on whether certain types of mutations are fixed preferentially during adaptive evolution. Although there has been much discussion, no quantitative framework currently exists to test for these biases. Here, we describe a method for distinguishing between the two processes that likely account for biased rates of substitution ...
Matthew A. Streisfeld, Mark D. Rausher
semanticscholar   +6 more sources

Fixation probabilities in network structured meta-populations

open access: yesScientific Reports, 2021
The effect of population structure on evolutionary dynamics is a long-lasting research topic in evolutionary ecology and population genetics. Evolutionary graph theory is a popular approach to this problem, where individuals are located on the nodes of a
Sedigheh Yagoobi, Arne Traulsen
doaj   +2 more sources

Population Genetics with Fluctuating Population Sizes [PDF]

open access: yesJournal of statistical physics, 2016
Standard neutral population genetics theory with a strictly fixed population size has important limitations. An alternative model that allows independently fluctuating population sizes and reproduces the standard neutral evolution is reviewed. We then study a situation such that the competing species are neutral at the equilibrium population size but ...
Thiparat Chotibut, D. Nelson
arxiv   +4 more sources

Hybrid fitness effects modify fixation probabilities of introgressed alleles

open access: yesG3: Genes, Genomes, Genetics, 2022
Hybridization is a common occurrence in natural populations, and introgression is a major source of genetic variation. Despite the evolutionary importance of adaptive introgression, classical population genetics theory does not take into account hybrid ...
Aaron Pfennig, Joseph Lachance
doaj   +2 more sources

Reappraisal of the Genetic Diversity Patterns in Puya raimondii—The Queen of the Andes: Insights from Molecular Marker Analysis Reveal an Inbreeding Reproductive Strategy [PDF]

open access: yesPlants
Puya raimondii Harms is a charismatic species discovered in the Cordillera Blanca (now Huascarán National Park, Peru) in 1867 by the great Italian-born Peruvian geographer and naturalist Antonio Raimondi.
Samela Draga   +2 more
doaj   +2 more sources

A theory of evolutionary dynamics on any complex population structure reveals stem cell niche architecture as a spatial suppressor of selection

open access: yesNature Communications
How the spatial arrangement of a population shapes its evolutionary dynamics has been of long-standing interest in population genetics. Most previous studies assume a small number of demes or symmetrical structures that, most often, act as well-mixed ...
Yang Ping Kuo   +2 more
doaj   +2 more sources

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