But selected genes show a different pattern: Evidence from the new genome-wide tests for selection show that most selective pressures are focused on specific populations.
Though the genome scans certainly suggest that many human genes have been shaped by cultural forces, the tests for selection are purely statistical, being based on measures of whether a gene has become more common.
Methods for assessing the pattern of evolution include phylogenetic analysis of sequence data, as well as tests for selection.
However, although estimates in the first two or three quarters after program entry may be biased, our tests for selection and incentive explanations do not suggest that impact estimates for later quarters are spurious.
Tests for selection and ancestor sequence reconstruction were carried out using the Codeml program implemented in PAML [35], [36].
Fourth, the specific mutational events that have lead to the functional diversification of the major opsin lineages are suggested by co-variation analyses and tests for selection.
Pairwise nucleotide diversity, the number of segregating sides, and tests for selection (Tajima's D, and Fu's F test) were calculated using DNAsp, version 4.20.2 [21], [22], [34].
Molecular population genetic tests for selection were used to determine whether evolutionary forces might be regulating nucleotide variation at Lim3 locus.
Tests for selection were conducted in DIVERGE2 [29] using our amino acid alignment (see supplemental materials), rooted phylogeny and the structure of bovine opsin previously calculated by x-ray crystallography [65].
Currently, there are six known examples of inherited neurological/neuromuscular diseases of cattle where the molecular basis has been elucidated and gene tests for selection against the deleterious mutation are available.
To test whether the phylogenetic information was biased by selection pressure, neutrality tests for selection (Tajima's D and Fu's F test) were performed using DNAsp, version 4.20.2 [33] [35].
