In urban population genetic studies, urbanization is typically predicted to act as a barrier that isolates populations of species, leading to increased genetic drift within populations and reduced gene flow between populations. However, urbanization may also facilitate dispersal among populations, leading ...
Natural selection, genetic drift, and gene flow are the mechanisms that cause changes in allele frequencies over time. When one or more of these forces are acting in a population, the population violates the Hardy-Weinberg assumptions, and evolution occurs. The Hardy-Weinberg Theorem thus...
But genetic diversity and adaptive variants held in marginal populations may be lost (1) when gene flow to environmentally central areas is impeded, (2) when genetic drift strongly affects populations with small effective population sizes or (3) if the populations go extinct as climate extremes ...
Recent studies show that microevolutionary processes, both neutral (e.g., genetic drift, gene flow) and selective (e.g., thermoregulatory adaptation), have... M Rivera,L Betti,J Stock - Conference of the British Association for Biological Anthropology & Osteoarchaeology 被引量: 0发表: 2015年...
3.4. Gene flow and genetic structure A power analysis indicated our set of markers had a 100% chance to detect FST values as small as 0.005. For lower values (FST=0.002 and 0.001), power decreased only slightly to 99.8% and 96.4%, respectively. Among all populations, the largest significan...
Understanding the population genetic consequences of habitat heterogeneity requires assessing whether patterns of gene flow correspond to landscape configuration. Studies of the genetic structure of populations are still scarce for Neotropical forest bir
A factor that drives genetic change, including genetic drift, mutation, gene flow and natural selection. Fitness landscape The relationship of genotype and reproductive success. Often depicted in three dimensional space, in which the X and Y axes are the coordinates that describe all possible genetic...
In anisakid nematodes, the gene flow is largely determined by the different dispersal capability of hosts, and it correlates with parasite abundance. Thus, habitat disturbance of marine ecosystems and food webs can have considerable long-term effects on the genetic diversity and on demography of a ...
For the CP population, this is the mid-stream point, and it can be assumed that there was little genetic flow between the other five populations at this point. One reason is that the points excluding the CP are the uppermost points of each water system, and the midstream point is only ...
of buckwheat species also provides an idea about the various interactive processes including its long-term evolutionary history (changes in distribution pattern, habitat isolation, species variation and population structure) in addition to mating strategy, mutation, genetic drift, selection and gene flow....