Results 11 to 20 of about 186,500 (263)
GENETIC BACKGROUND AND THE FITNESS OF ALLOZYMES [PDF]
Genetics, 1974 ABSTRACT Experimental perturbations of gene frequency at the esterase-5 locus in Drosophila pseudoobscura were carried out in a series of population cages started with differing numbers of founder chromosomes. Cages founded with few chromosomes showed changes in gene frequency at the allozyme locus. Such changes were less marked in cages
J S, Jones, T, Yamazaki
openaire +2 more sources
Frontiers in Plant Science, 2020 A biological life support system for spaceflight would capture carbon dioxide waste produced by living and working in space to generate useful organic compounds. Photosynthesis is the primary mechanism to fix carbon into organic molecules. Microalgae are
Junya Zhang +8 more
doaj +1 more source
Genetic complementation fosters evolvability in complex fitness landscapes
Scientific Reports, 2023 The ability of natural selection to optimize traits depends on the topology of the genotype-fitness map (fitness landscape). Epistatic interactions produce rugged fitness landscapes, where adaptation is constrained by the presence of low-fitness ...
Ernesto Segredo-Otero, Rafael Sanjuán
doaj +1 more source
Intralocus sexual conflict diminishes the benefits of sexual selection. [PDF]
PLoS Biology, 2006 Evolution based on the benefits of acquiring "good genes" in sexual selection is only plausible with the reliable transmission of genetic quality from one generation to the next.
Alison Pischedda, Adam K Chippindale
doaj +1 more source
A simple completion of Fisher’s fundamental theorem of natural selection
Ecology and Evolution, 2021 Fisher's fundamental theorem of natural selection shows that the part of the rate of change of mean fitness that is due to natural selection equals the additive genetic variance in fitness.
Alan Grafen
doaj +1 more source
The Journal of Poultry Science, 2003 Establishment of small body size poultry is an important strategy, which leads to effective management of bird-colonies and less feed consumption. And also it would be a useful experimental tool for elucidating an evolutionary mechanism causing the ...
Yoshihito Suda, Satoru Okamoto
doaj +1 more source
BMC Evolutionary Biology, 2008 Background Quantifying the amount of standing genetic variation in fitness represents an empirical challenge. Unfortunately, the shortage of detailed studies of the genetic architecture of fitness has hampered progress in several domains of evolutionary ...
Maklakov AA +4 more
doaj +1 more source
Ecology and Evolution, 2022 Polyploid species possess more than two sets of chromosomes and may show high gene redundancy, hybrid vigor, and masking of deleterious alleles compared to their parent species.
Torbjørn Kornstad +2 more
doaj +1 more source
The quantitative genetics of fitness in a wild seabird
Evolution, 2021 Additive genetic variance in fitness is a prerequisite for adaptive evolution, as a trait must be genetically correlated with fitness to evolve. Despite its relevance, additive genetic variance in fitness has not often been estimated in nature. Here, we investigate additive genetic variance in lifetime and annual fitness components in common terns ...
Moiron, Maria +2 more
openaire +5 more sources
Good genes and sexual selection in dung beetles (Onthophagus taurus): genetic variance in egg-to-adult and adult viability. [PDF]
PLoS ONE, 2011 Whether species exhibit significant heritable variation in fitness is central for sexual selection. According to good genes models there must be genetic variation in males leading to variation in offspring fitness if females are to obtain genetic ...
Francisco Garcia-Gonzalez +1 more
doaj +1 more source