Sentence examples for been a selective pressure from inspiring English sources

This benefit may thus have been a selective pressure for evolution of proton-specific respiration in closely-associating species.

Thus, there could have been a selective pressure for a nonfunctional GRA15 in RH-ERP and RH-JSR, allowing for increased parasite burden in the host or faster replication in vitro.

The large amount of various aminoglycosides used in livestock-farming environments could have also been a selective pressure for the emergence and spread of pathogenic microbes that harbor genetic determinants for the newly identified 16S rRNA methylases, as exemplified by recent isolation of ArmA-producing E. coli from swine in Spain (GenBank accession no. AY522431).

While it is tempting to speculate that the need for ancient hunters/gatherers to run/walk long distances may have been a selective pressure, daily activity above what was needed to provide food would have put strains on energy balance within the individual and impacted the collective tribe's food supply.

Adaptive evolution or positive selection is a selective pressure placed on a protein by a change in environment in order to improve the fitness of the organism in that environment.

Emily Monosson, an environmental toxicologist at the University of Massachusetts in Amherst said: "It wouldn't be unexpected that being exposed to a contaminant that makes you sick would be a selective pressure on humans".

The scientists said that the results indicated that fire was a selective pressure that shaped seed traits, and had more of a defining influence than other environmental factors, such as drought.

Under the presence of noise, there is a selective pressure to avoid the turning points (basin boundaries) that exist within the distance δp from the "target" orbit.

These results suggest that there was a selective pressure upon leukocytes to emigrate from the liver due to MSC-CM, unlike control conditions where leukocytes eventually migrated to the injured organ.

However, if there is a selective pressure to conserve a target site, the distribution will be shifted to the right.

Whether there is a selective pressure for some loci to be preferentially amplified or deleted remains to be confirmed.