http://www.chenlianfu.com/?p=3084
https://www.cnblogs.com/bio-mary/p/12923978.html
1. Positive selection
Positive selection=Darwinian selection=Positive Darwinian selection=Adaptive selection
Positive selection is the process by which new advantageous genetic variants sweep a population.
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https://www.science.org/doi/10.1126/science.1124309
Positive natural selection is the force that drives the increase in prevalence of advantageous traits.
https://depts.washington.edu/jtlab/positiveSelection.html
Positive selection is the process by which new advantageous genetic variants sweep a population.
2. Negative selection
Negative selection=Purifying selcetion
https://en.jinzhao.wiki/wiki/Negative_selection_(natural_selection)
Negative selection is the selective removal of alleles that are deleterious.
Purifying selection is the most prevalent form of selection as it constantly sweeps away deleterious mutations that are produced in each generation.
