Genetic diversity and population structure

Population genetics examines how genetic variation is distributed within and among groups of organisms, and what forces — mutation, migration, natural selection, and random drift — shape that variation over time. Understanding the genetic structure of populations helps researchers trace evolutionary histories, identify distinct species or subspecies, and pinpoint the molecular signatures of adaptation to local environments. Tools like microsatellite markers and Bayesian statistical methods have made it possible to reconstruct past population dynamics with increasing precision, even from small or degraded samples. Active challenges include disentangling the effects of selection from demographic history, and developing robust criteria for species delimitation in groups where genetic and geographic boundaries don't align neatly.

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Keywords

Population GeneticsGenetic StructurePopulation DynamicsMicrosatellite AnalysisBayesian InferenceGenetic Diversity