Adaptation from leaps in the dark.
Although many adaptations occur by selection of beneficial alleles transformed from neutral or deleterious standing variation, new identical mutant alleles that arise as premeiotic clusters have an increased probability of fixation that can rise to the levels that are similar to the fixation of standing variation. Hence, the evidence is still out on the proportion of adaptations that use preexisting variation and new mutations.
Woodruff
Ronny C
RC
Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, USA. rwoodru@bgnet.bgsu.edu
Zhang
Mingcai
M
D000220:Adaptation, Biological / Q000235:genetics; D000483:Alleles; D014644:Genetic Variation / Q000235:genetics*; D005828:Genetics, Population; D009154:Mutation; D012641:Selection, Genetic