Results 21 to 30 of about 213,884 (312)

GENETIC BACKGROUND AND THE FITNESS OF ALLOZYMES [PDF]

open access: yesGenetics, 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

Competitive Growth Assay of Mutagenized Chlamydomonas reinhardtii Compatible With the International Space Station Veggie Plant Growth Chamber

open access: yesFrontiers 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

open access: yesScientific 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]

open access: yesPLoS 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

Long Term Selection for Small Body Weight in Japanese Quail II : Changes in Reproductive Traits from 60 to 65th Generations

open access: yesThe 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

A simple completion of Fisher’s fundamental theorem of natural selection

open access: yesEcology 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

Non-stationary problem optimization using the primal-dual genetic algorithm [PDF]

open access: yes, 2003
This article is posted here with permission from IEEE - Copyright @ 2003 IEEEGenetic algorithms (GAs) have been widely used for stationary optimization problems where the fitness landscape does not change during the computation. However, the environments
Yang, S   +2 more
core   +1 more source

Effects of inbreeding and genetic modification on Aedes aegypti larval competition and adult energy reserves [PDF]

open access: yes, 2010
Background Genetic modification of mosquitoes offers a promising strategy for the prevention and control of mosquito-borne diseases. For such a strategy to be effective, it is critically important that engineered strains are competitive enough to serve ...
Laura C Harrington   +8 more
core   +1 more source

The genetic architecture of fitness in a seed beetle: assessing the potential for indirect genetic benefits of female choice

open access: yesBMC 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

Genetic influences on exercise participation in 37.051 twin pairs from seven countries [PDF]

open access: yes, 2006
Background A sedentary lifestyle remains a major threat to health in contemporary societies. To get more insight in the relative contribution of genetic and environmental influences on individual differences in exercise participation, twin samples from ...
Hunkin, J   +116 more
core   +1 more source

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