Partial selective sweep of a new advantageous mutation in the absence of recombination
The novel SNP
mutation is indicated by the red
star: it necessarily arises in a single
individual, with a potentially unique pattern of
surrounding, genetically linked SNPs. Note in the
example that the linked SNP to the left is shared
with the the two chromosomes immediately above it, as an
indication of common ancestry. The SNP to the
right is unique.
Strong selection for the advantageous SNP may result in an increase in the prevalence of other SNP markers in the adjacent gene region (haplotype) without fixation. As previously, the haplotype SNP markers have no selective advantage in themselves.
Strong selection for the advantageous SNP may result in an increase in the prevalence of other SNP markers in the adjacent gene region (haplotype) without fixation. As previously, the haplotype SNP markers have no selective advantage in themselves.
Figures © 2013 by Sinauer; Text material © 2017 by Steven M. Carr