Results 21 to 30 of about 5,625,610 (302)

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   +1 more source

Phenotypic heterogeneity in modeling cancer evolution. [PDF]

open access: yesPLoS ONE, 2017
The unwelcome evolution of malignancy during cancer progression emerges through a selection process in a complex heterogeneous population structure. In the present work, we investigate evolutionary dynamics in a phenotypically heterogeneous population of
Ali Mahdipour-Shirayeh   +3 more
doaj   +1 more source

Linking Diversity and Differentiation

open access: yesDiversity, 2010
Generally speaking, the term differentiation refers to differences between collections for the distribution of specified traits of their members, while diversity deals with (effective) numbers of trait states (types).
Hans-Rolf Gregorius
doaj   +1 more source

Mating system and speciation I: Accumulation of genetic incompatibilities in allopatry.

open access: yesPLoS Genetics, 2022
Self-fertilisation is widespread among hermaphroditic species across the tree of life. Selfing has many consequences on the genetic diversity and the evolutionary dynamics of populations, which may in turn affect macroevolutionary processes such as ...
Lucas Marie-Orleach   +2 more
doaj   +1 more source

Health influenced by genetics: A first comprehensive analysis of breast cancer high and moderate penetrance susceptibility genes in the Tunisian population

open access: yesPLoS ONE, 2022
Significant advances have been made to understand the genetic basis of breast cancer. High, moderate and low penetrance variants have been identified with inter-ethnic variability in mutation frequency and spectrum. Genome wide association studies (GWAS)
M. Boujemaa   +6 more
semanticscholar   +1 more source

Dispersal and population structure at different spatial scales in the subterranean rodent Ctenomys australis [PDF]

open access: yes, 2014
This study was funded by grants from Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, PIP5838), Agencia de Promoción Científica y Tecnológica de la Argentina (PICTO1-423, BID-1728/OC-AR), and the programme ECOS-Sud France/Argentina ...
Gaggiotti, Oscar E.   +4 more
core   +2 more sources

The role of duplications in the evolution of genomes highlights the need for evolutionary-based approaches in comparative genomics

open access: yesBiology Direct, 2011
Understanding the evolutionary plasticity of the genome requires a global, comparative approach in which genetic events are considered both in a phylogenetic framework and with regard to population genetics and environmental variables.
Levasseur Anthony, Pontarotti Pierre
doaj   +1 more source

Muller's ratchet and mutational meltdowns [PDF]

open access: yes, 1993
We extend our earlier work on the role of deleterious mutations in the extinction of obligately asexual populations. First, we develop analytical models for mutation accumulation that obviate the need for time-consuming computer simulations in certain ...
Lynch, M.   +8 more
core   +1 more source

A practical genome scan for population-specific strong selective sweeps that have reached fixation. [PDF]

open access: yesPLoS ONE, 2007
Phenotypic divergences between modern human populations have developed as a result of genetic adaptation to local environments over the past 100,000 years. To identify genes involved in population-specific phenotypes, it is necessary to detect signatures
Ryosuke Kimura   +3 more
doaj   +1 more source

The clarifying role of time series data in the population genetics of HIV.

open access: yesPLoS Genetics, 2021
HIV can evolve remarkably quickly in response to antiretroviral therapies and the immune system. This evolution stymies treatment effectiveness and prevents the development of an HIV vaccine.
Alison F Feder   +2 more
doaj   +1 more source

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