During the most recent and severe DENV-4 epidemic in Puerto Rico in 1998, viruses were distinguished by three amino acid replacements in the NS2A protein (I14V, V54T, and P101T), which were fixed more rapidly than would have been expected by drift alone.
The ISG15 variability largely exceeds what can be expected by genetic drift alone [2].
Coalescent analyses of the evolution of phenotypic traits suggest that the fixation of song types has occurred faster than would be expected by genetic drift, suggesting that the action of selection is driving song evolution in wedge-tailed sabrewings.
Results are expected by March.
In such a situation, purging, by opposing the increase in frequency that would be expected from genetic drift for some of these deleterious alleles, will prevent excessive contribution from any founder individual to future generations.
Association was tested primarily by looking for greater allelic segregation between the two selection lines than would be expected to arise by genetic drift [ 29].
which improve the error minimization of the genetic code, but confer a selective advantage below this threshold, would not be expected to reach fixation except by drift.
If QST is larger than FST, the quantitative genetic differentiation is larger than expected by drift alone, and the difference could be assigned to divergent selection and adaptation to local environments, but, if QST is smaller, convergent spatially uniform selection could have favoured the same genotypes at different sites (Volis et al., 2005).
Sved's equation [ 55] was fitted to the data using the nlinfit function of MATLAB, but provided a poor fit (as expected, since LD in the population would be expected to be caused by other factors in addition to drift).
