Search results
Results from the WOW.Com Content Network
Disruptive selection is a specific type of natural selection that actively selects against the intermediate in a population, favoring both extremes of the spectrum. Disruptive selection is inferred to oftentimes lead to sympatric speciation through a phyletic gradualism mode of evolution. Disruptive selection can be caused or influenced by ...
Maintenance of allelic variation can also occur through disruptive or diversifying selection, which favours genotypes that depart from the average in either direction (that is, the opposite of over-dominance), and can result in a bimodal distribution of trait values. Finally, balancing selection can occur through frequency-dependent selection ...
Diversifying selection is the hypothesis that two subpopulations of a species live in different environments that select for different alleles at a particular locus. This may occur, for instance, if a species has a large range relative to the mobility of individuals within it.
The genetic isolation and different associations in regional heterogeneity could be cited as evidence of diversifying selection working across entire genomes, encompassing manifestly neutral genes. They can be used to predict the long-term effects of environmental factors on genetic diversity and isolation. [11]
Disruptive selection acts because there is negative selection for intermediate phenotypes, where as diversifying selection operates by way of positive selection for extreme phenotypes, such that assuming a continuous linear phenotype-space disruptive selection results in a bimodal distribution of phenotypes, whereas diversifying selection ...
Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.
Directional selection can change the genotypic and phenotypic variation of a population and cause a trend toward one specific phenotype. [6] This selection is an important mechanism in the selection of complex and diversifying traits, and is also a primary force of speciation. [7]
What is a cutter? A dart. Hitting the fairway on a dogleg hole. The slider-fastball midpoint. What does it look like? A cutter is a fastball with a hint of a slider’s bite.