Therefore, the temporary cluster head can change its state to a main cluster by selecting a subcarriers set that is not used by its adjacent clusters and trying its best to maintain the sequence of the subcarriers sets as c1, c2, c3.
This is known as purifying selection as potentially deleterious mutations are purged from the population in order to maintain the sequence of a functionally important site or region within the coding gene.
The data presented here indicates that in these species there is a combination of strong pressure to maintain many cytochrome genes with weak pressure to maintain the sequence of most cytochrome genes.
For the case shown in Fig. 1a, if P NRR is changed from 0 to 0.5 at step 1.4 × 10 – when only a portion of the chromosome molecules still maintain the sequence of the Nrr gene, we can see the gene-elimination phenomenon (instead of the system-wide collapse), in which the Nrr's extinction is accelerated (Fig. 2a, compared with Fig. 1a).
DOI: http://dx.doi.org/10.7554/eLife.05290.007 We next performed site-directed mutagenesis to change the T found in high-plated fish to the G found in all sequenced low-plated fish, while maintaining the sequence of the high-plated marine haplotype throughout the rest of the enhancer construct.
To maintain the sequence depth uniformity of different fragments, a tight length range was selected (roughly 30-50 bp) and a pilot PCR amplification was performed to check the reduced representation library (RRL) features in this target length range.
This is exemplified by the long term success of poliovirus vaccines, which has been related to purifying selection maintaining the sequence and hence structure of targeted surface proteins [38] conversely targeting the rapidly evolving proteins of HIV may have contributed to developing resistance [39].
If altered GA microsatellites are present in the other A2 genes throughout the genome, this may restrict recombination or gene conversion to within the A type element pattern category and maintain the sequence diversity for all of the A type genes so that they share a similar element pattern and individual element sequences.
Newly instantiated genes inserted into gaps were assigned identifiers that maintained the monotonic sequence of identifiers, making use of sets of identifiers that had been reserved for each of the gaps based upon approximated size in the Mt3.5 pseudomolecules.
Beta vulgaris was chosen because it is the most closely related species with an available rrn5 sequence, and it appears to have maintained the ancestral sequence of core eudicots.
