Multiple niche polymorphism
Web1 apr. 2002 · Multiple niche polymorphism Am. Nat., 106 ( 1972), pp. 254 - 257 View in Scopus Google Scholar This basic model can be elaborated introducing an asymmetry in density or migration between the two habitats; this tends to favor the allele that is advantageous in the high density, low immigration deme [3].
Multiple niche polymorphism
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Webvariation in selection appear to be much more restric- tive than those for maintaining variation from spatial variation in fitness (e.g. Hedrick et a!., 1976; Hedrick, WebBalanced polymorphisms have been described in a diversity of taxa and can be maintained through one or more processes such as superior fitness of heterozygotes, inverse frequency dependence, gene flow, disassortative mating and niche differentiation of the morphs (reviews in Ford, 1964; Futuyma, 1997 ).
WebPubMed Web1 sept. 2024 · The likelihood of polymorphism versus speciation as a response to disruptive selection depends on the simplicity of the genetic basis of the traits involved in alternative adaptation. If variation at a single (super)gene, potentially with pleiotropic effects, is enough to optimally adapt to the alternative niches, polymorphism persistence is ...
WebMultiple-niche polymorphism [ edit] Ecological niches are all of the variables in an environment, such as the resources, competitors, and responses, that contribute to the organism's fitness. Multiple-niche polymorphism states that diversity is maintained within a population due to the varying amount of possible niches and environments. [42] WebBo Deng, Alex Estes, Brett Grieb, Douglas Richard, Brittney Hinds, Eileen Hebets A male spider׳s ornamentation polymorphism maintained by opposing selection with two niches, Journal of Theoretical Biology 357 (Sep 2014): 103–111.
Web13 iul. 2024 · The region of the parameter space where polymorphism is maintained further narrows with increasing number of loci encoding the diverging trait and the rate of recombination between them. Yet, evolvable assortment and pre-existing assortment both substantially broaden the parameter space within which polymorphism is maintained.
WebA NOTE ON MULTIPLE-NICHE POLYMORPHISMS IN PLANT POPULATIONS In many plants as well as in animals, the maternal parent has a nutritive or nurturing role, as … pantaloni premaman invernaliWebThe first two models are applicable to an autosomal locus in an hermaphroditic plant population with mixed selfing and random mating. They describe the interaction of … エレポン ls-s1Web7 aug. 2006 · Multiple niche polymorphism is a theoretical concept that describes the diversification of populations through adaptation to different ecological niches 16. We hypothesize that multiple niche ... エレホンフィックスtWebFor a single autosomal locus with multiple alleles both an island and a multiple-niche model with discrete nonoverlapping generations are formulated for th Polymorphism … エレホンフィックス 価格Web6 aug. 2024 · One of the underlying mechanisms is the multiple-niche polymorphism balancing selection where various vertebrate hosts can act as ecological niches for some genotypes of a species [8, 9]. This balancing selection entails that the bacteria have different fitness in different vertebrate hosts. pantaloni puro linoWebT-RFPred: a nucleotide sequence size prediction tool for microbial community description based on terminal-restriction fragment length polymorphism chromatograms E. Casamayor, A. Fernàndez-Guerra, A. Buchan, 2010, BMC Microbiology. pantalon i quing neuf et occasionWebIt is shown that niche preferences can increase the protective effect of natural selection over a polymorphism. This effect depends on the existence of a positive correlation between … pantalon i quing