منابع مشابه
Evolution can favor antagonistic epistasis.
The accumulation of deleterious mutations plays a major role in evolution, and key to this are the interactions between their fitness effects, known as epistasis. Whether mutations tend to interact synergistically (with multiple mutations being more deleterious than would be expected from their individual fitness effects) or antagonistically is important for a variety of evolutionary questions,...
متن کاملAntagonistic epistasis for ecophysiological trait differences between Solanum species.
Epistasis, the nonadditive interaction between loci, is thought to play a role in many fundamental evolutionary processes, including adaptive differentiation and speciation. Focusing on species differences in ecophysiological traits, we examined the strength and direction of pairwise epistatic interactions between target chromosomal regions from one species, when co-introgressed into the geneti...
متن کاملThe effect of epistasis on sexually antagonistic genetic variation.
There is increasing evidence of segregating sexually antagonistic (SA) genetic variation for fitness in laboratory and wild populations, yet the conditions for the maintenance of such variation can be restrictive. Epistatic interactions between genes can contribute to the maintenance of genetic variance in fitness and we suggest that epistasis between SA genes should be pervasive. Here, we expl...
متن کاملCan You Do Me A Favor?
Multiagent systems often require coordination among the agents to maximize system utility. Using the notion of favors, we propose a technique, flexible reciprocal altruism, which determines when one agent should grant a favor to another agent based on past interactions. The desired rate of altruism is controllable, and as a result the loss associated with granting unmatched favors is bounded an...
متن کاملHow Producer Biases Can Favor the Evolution of Communication: An Analysis of Evolutionary Dynamics
As any other biological trait, communication can be studied under at least four perspectives: mechanistic, ontogenetic, functional, and phylogenetic (Tinbergen, 1963). Here we focus on the following phylogenetic question: how can communication emerge given that both signal-producing and signal-responding abilities seem to be adaptively neutral until the complementary ability is present in the p...
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ژورنال
عنوان ژورنال: Genetics
سال: 2007
ISSN: 1943-2631
DOI: 10.1534/genetics.107.075812