Sentence examples for absence of selective pressure from inspiring English sources
Although conjugation in the environment is frequently under the force of positive selection, we have shown that even in the absence of selective pressure, there is a regime where conjugation can persist despite phage inhibition.
albicans in the no drug condition increases in the absence of selective pressure.
This feature enabled the operation of the succinate pathway in the absence of selective pressure (e.g. antibiotics).
Fig. 4 Assessment of genetic stability of transformants in the absence of selective pressure.
Given that pGL does not contain a known origin of replication for G. trabeum and that the transformed plasmids were stably retained in the absence of selective pressure, we infer that the transformed plasmids were integrated into the chromosomes of the transformants.
However, they also seem to show an impaired expression capable of reverting in the absence of selective pressure.
Thus these de novo designed proteins, which were produced in the complete absence of selective pressures or design constraints explicitly aimed at ensuring rapid folding, are among the most rapidly folding proteins reported to date.
The large majority of such mutations have no functional significance and persist by chance in the absence of selective pressures.
Numerous genes that showed a similar frequency of non-silent mutations as EGFR and KRAS among the 520 samples co-occurred with mutations in KRAS or EGFR, within the range expected by chance in the absence of selective pressures.
Antibiotic resistance can arise in the absence of selective pressures where antibiotic resistance genes are linked on a mobile genetic element; in these cases, exposure to a single antimicrobial agent has been shown to give rise to co-selection of multiple antibiotic resistance genes.
In the absence of selective pressures resulting from a second mutation, it would be anticipated that the more times a gene is mutated in the sample set, the more often it should co-occur in a tumor with a mutation in the proto-oncogene.
