Gene flow, adaptive population divergence and comparative population structure across loci
نویسندگان
چکیده
منابع مشابه
Population Structure and Adaptive Divergence in a High Gene Flow Marine Fish: The Small Yellow Croaker (Larimichthys polyactis).
The spatial distribution of genetic diversity has been long considered as a key component of policy development for management and conservation of marine fishes. However, unraveling the population genetic structure of migratory fish species is challenging due to high potential for gene flow. Despite the shallow population differentiation revealed by putatively neutral loci, the higher genetic d...
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Detailed studies of individual genes have shown that gene expression divergence often results from adaptive evolution of regulatory sequence. Genome-wide analyses, however, have yet to unite patterns of gene expression with polymorphism and divergence to infer population genetic mechanisms underlying expression evolution. Here, we combined genomic expression data--analyzed in a phylogenetic con...
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Molecular genetic markers have played a major role in evolutionary biology.As molecular methods have become cheaper, faster and involve less invasive sampling, they have become increasingly popular in conservation [2,3], where there is often a clear need for rapid decision making. For example, because genetic differences among populations are often considered worthy of conserving [2–5], many st...
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Adaptive population divergence is often driven by divergent natural selection, but can be constrained by the homogenizing effect of gene flow between populations. Indeed, a common pattern in nature is an inverse correlation between the degree of adaptive phenotypic divergence between populations and levels of gene flow between populations. However, there is essentially no experimental data on w...
متن کاملComparative estimation of effective population sizes and temporal gene flow in two contrasting population systems.
Estimation of effective population sizes (N(e)) and temporal gene flow (N(e)m, m) has many implications for understanding population structure in evolutionary and conservation biology. However, comparative studies that gauge the relative performance of N(e), N(e)m or m methods are few. Using temporal genetic data from two salmonid fish population systems with disparate population structure, we ...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 2003
ISSN: 0028-646X,1469-8137
DOI: 10.1046/j.1469-8137.2003.00920.x