Results 11 to 20 of about 143,746 (232)

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 Prince, Neville C. Weber
  +5 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
  +6 more sources

Interplay between pleiotropy and secondary selection determines rise and fall of mutators in stress response. [PDF]

open access: yesPLoS Computational Biology, 2010
Mutators are clones whose mutation rate is about two to three orders of magnitude higher than the rate of wild-type clones and their roles in adaptive evolution of asexual populations have been controversial.
Muyoung Heo, Eugene I Shakhnovich
doaj   +11 more sources

Invasion and effective size of graph-structured populations. [PDF]

open access: yesPLoS Computational Biology, 2018
Population structure can strongly affect evolutionary dynamics. The most general way to describe population structures are graphs. An important observable on evolutionary graphs is the probability that a novel mutation spreads through the entire ...
Stefano Giaimo   +2 more
doaj   +1 more source

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   +1 more source

Explaining spatial heterogeneity in population dynamics and genetics from spatial variation in resources for a large herbivore. [PDF]

open access: yesPLoS ONE, 2012
Fine-scale spatial variation in genetic relatedness and inbreeding occur across continuous distributions of several populations of vertebrates; however, the basis of observed variation is often left untested.
Adrienne L Contasti   +3 more
doaj   +1 more source

Limiting Genotype Frequencies of Y-Linked Genes with a Mutant Allele in a Two-Sex Population

open access: yesMathematics, 2021
A two-type two-sex branching process is considered to model the evolution of the number of carriers of an allele and its mutations of a Y-linked gene. The limiting growth rates of the different types of couples and males (depending on the allele, mutated
Miguel González   +2 more
doaj   +1 more source

Interplay between extreme drift and selection intensities favors the fixation of beneficial mutations in selfing maize populations [PDF]

open access: yesGenetics, 2020
Abstract Population and quantitative genetic models provide useful approximations to predict long-term selection responses sustaining phenotypic shifts, and underlying multilocus adaptive dynamics. Valid across a broad range of parameters, their use for understanding the adaptive dynamics of small selfing populations undergoing strong ...
Arnaud Desbiez-Piat   +3 more
openaire   +6 more sources

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