Sentence examples for under a positive selection from inspiring English sources

The two most common motifs among the eleven species are under a positive selection pressure.

Evolution of functional TFBS sequences is strongly non-neutral [ 11, 28] and under a positive selection [ 29], which makes it difficult to calculate the rate of TFBS evolution.

The A3 genes of primates, rodents, felids, horses and pigs have been described to be under a positive selection [ 15, 16, 50- 53].

More than 50% of sites for both motifs analyzed across species were under a positive selection (dN/dS > 1), suggesting a weak selection pressure on these EST-SSR motifs, as was reported for other species [ 52, 53].

Their results suggest that the cetacean Hr gene has experienced a significant relaxation of functional constraints during its evolution from terrestrial mammals and subsequent diversification, and probably lost its function, whereas the FGF5 was under a positive selection regime.

Five of these STAND proteins correspond to the previously identified NWD proteins (NWD1, NWD2, NWD5, HNWD1, and HET-D), which share strongly conserved WD-repeats that evolve by concerted evolution and under a positive selection regimen (Paoletti et al. 2007).

A significantly high Fay & Wu's H (8.62 for 12 SNPs, P = 0.0001 assuming the standard neutral model) suggested a hitchhiking effect under a recent positive selection.

It has been shown that these proteins are under a strong positive selection [24] and can thus escape in silico analyses.

Thus, a gene under purifying selection will evolve at a slower rate than a gene under positive selection.

In this latter test, a locus under positive selection is supposed to have a polymorphism/divergence ratio smaller than that of a neutral one.

Like the present study, Haygood et al. (2004) looked at the fixation probability of a transgene under positive selection, though they did this in a single-population system.