Although this pattern cannot be used to determine if the mutations were originally fixed by natural selection, conservation after an ancient diversification indicates a long period of stasis, consistent with purifying selection on adaptive, alternative amino acid states.
Nitrogen is originally fixed from the atmosphere and then mineralized by soil bacteria into ammonium.
Nitrogen is originally fixed from the atmosphere and then mineralized by bacteria to ammonium.
In the first case, the fracture was originally fixed in distraction, which ultimately led to the breakage of the distal locking screws and valgus displacement of the shaft fracture at 5 months after surgery (Fig. 2).
The level of vibrato was originally fixed; this changed in 1949 with the introduction of the B-2 and C-2, in which vibrato could be adjusted.
3) CASP also proposes that small subpopulations resulting from the subdivisions are primary incubators of new repetitive families originally fixed by genetic drift, and subsequently undergoing purifying selection.
In order to add more flexibility, let the originally fixed number of subjects per-arm per-stage, n, now equal, so this number can vary across stages if required (as in Bowden & Glimm (2008)).
Some of the TE-derived repeats or repeat fragments originally fixed in the population may become recruited as functional components of the non-coding genomic DNA [ 1- 8], and those can be identified in DNA segments conserved across species [ 9, 10].
We were able to estimate the proportion of substitutions in each genome that were originally fixed in other populations and subsequently transferred because the frequency of HGTs could be predicted by substitutions per site in the concatenated ribosomal protein phylogeny according to an inverse log-linear relationship among all sampled members of the class Halobacteria.
Originally, a fixed vent ratio, determined by the maximum rate of pressure rise in the 1.2 liter Hartmann bomb, was specified for a specific dust.
