Sentence examples for continual selection from inspiring English sources

Resistant clones (9 cell lines transfected with pCMX-STOX1-A and 3 cell lines transfected with empty pCMX) were grown individually in continual selection and used for further analysis or frozen in DMSO.

Since most longevity-associated genes, such as APOE, will cause a distribution around a mean for the corresponding mortality, evolution will rarely, if ever, manage to push deleterious gene action entirely beyond the reach of selection, although as envisaged by Medawar there will be a continual selection pressure to postpone such action to later and later ages.

This leads to parasites driving continual selection against common genotypes, favoring rare genotypes and promoting diversity through time [ 4].

These genes are expected to be under continual selection pressure for alleles that allow the plant to defend against pathogen attack.

Treatment of oral candidiasis in HIV-positive patients is difficult because of recurring episodes, intermittent exposure and continual selection of antifungal therapy-resistant strains.

The coupled selection of metabolic and immune function traits is of the utmost importance, as continual selection for single metabolic or growth traits have had a detrimental effect on immune function in poultry [ 18].

Prophages are an important feature, as phage resistance has been a major driver for strain selection programs for dairy cultures, and phage challenge has been a continual selective stress in their environment.

We also showed that about 50% of toxin sequences had exceptionally high nonsynonymous substitution rates relative to nontoxins, which is also consistent with strong, continual positive selection acting on toxins, although relaxed purifying selection cannot be ruled out.

The observations of extremely rapid evolution of influenza A, especially in the HA gene, has led to the suggestion that the evolution of the surface regions of the HA is driven by continual positive selection.

The high level of metronidazole resistance in this purified strain was unstable and decreased to 2 mg/L, which may be due to the absence of continual antibiotic selection.

However, recent work by Blumenstiel et al. (2014) showed that the young age of many TEs copies in D. melanogaster is consistent with recent bursts of transposition, rather than continual negative selection and element turnover.