Results 31 to 40 of about 186,500 (263)

Cross‐sex genetic correlations for fitness and fitness components: Connecting theoretical predictions to empirical patterns

open access: yesEvolution Letters, 2019
Sex differences in morphology, physiology, development, and behavior are widespread, yet the sexes inherit nearly identical genomes, causing most traits to exhibit strong and positive cross‐sex genetic correlations.
Tim Connallon, Genevieve Matthews
doaj   +1 more source

Predicting the evolution of sex on complex fitness landscapes.

open access: yesPLoS Computational Biology, 2009
Most population genetic theories on the evolution of sex or recombination are based on fairly restrictive assumptions about the nature of the underlying fitness landscapes.
Dusan Misevic   +2 more
doaj   +1 more source

Simple Genetic Algorithms with Linear Fitness

open access: yesEvolutionary Computation, 1994
A general form of stochastic search is described (random heuristic search), and some of its general properties are proved. This provides a framework in which the simple genetic algorithm (SGA) is a special case. The framework is used to illuminate relationships between seemingly different probabilistic perspectives of SGA behavior.
Michael D. Vose, Alden H. Wright
openaire   +2 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Direct selection on genetic robustness revealed in the yeast transcriptome. [PDF]

open access: yesPLoS ONE, 2007
Evolutionary theory predicts that organisms should evolve the ability to produce high fitness phenotypes in the face of environmental disturbances (environmental robustness) or genetic mutations (genetic robustness).
Stephen R Proulx   +2 more
doaj   +1 more source

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

Population bottlenecks constrain host microbiome diversity and genetic variation impeding fitness.

open access: yesPLoS Genetics, 2022
It is becoming increasingly clear that microbial symbionts influence key aspects of their host's fitness, and vice versa. This may fundamentally change our thinking about how microbes and hosts interact in influencing fitness and adaptation to changing ...
Michael Ørsted   +3 more
doaj   +1 more source

Sex Reversal and Performance in Fitness-Related Traits During Early Life in Agile Frogs

open access: yesFrontiers in Ecology and Evolution, 2021
Sex reversal is a mismatch between genetic sex (sex chromosomes) and phenotypic sex (reproductive organs and secondary sexual traits). It can be induced in various ectothermic vertebrates by environmental perturbations, such as extreme temperatures or ...
Veronika Bókony   +10 more
doaj   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

open access: yesFEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto   +3 more
wiley   +1 more source

Evolution of genetic redundancy: the relevance of complexity in genotype–phenotype mapping

open access: yesNew Journal of Physics, 2014
Despite its ubiquity among organisms, genetic redundancy is presumed to reduce total population fitness and is therefore unlikely to evolve. This study evaluates an evolutionary model with high-dimensional genotype–phenotype mapping (GPM) by applying a ...
Nen Saito   +2 more
doaj   +1 more source

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