Petal color for both flowers is heavily influenced by a gene known as YUP, which permits or prevents the deposition of yellow pigments.
These characteristics in nectar receivers would give them not only the role of hubs (highly-connected nodes) within the dynamic network, but also of moderators which either permit or prevent the passage of the incoming nectar.
DNA methylation and histone modifications regulate gene expression by modifying chromatin structure to permit or prevent access of the transcription complexes to the DNA.
Facebook lets users set up lists of friends or choose specific friends that can be permitted to or prevented from seeing content.
But these trainers either permitted or could not prevent Quayle's looking wooden & frightened--like a young man hesitantly reciting his lessons & knowing little else.
Bowtie-shaped micropatterned areas (75 1600 μm2) were engineered to either permit or prevent cell cell contact for pairs of adherent keratinocytes.
The mark of an active or silent chromatin region is the chemical state of its nucleosomes, specifically whether the histones, on which the DNA is wrapped, permit or prevent the RNA-constructing enzyme, RNA polymerase, to bind to the DNA for transcription.
However, a wind just a tenth of a second over the permitted level prevented the Jamaican from matching the personal best he achieved almost two years ago in Lausanne.
Yesterday, the 2020 Democratic presidential candidate introduced new legislation that would make it easier to hold executives of corporations that make more than $1 billion accountable when they "negligently permit or fail to prevent a violation of law" that results in a percentage of Americans' "health, safety, finances or personal data" being breached.
Speaking to reporters aboard his flight from Mexico's Ciudad Juarez to Rome, Francis was asked if a "lesser evil" — abortion or contraception — could be permitted to prevent the disease from harming a fetus.
I say that when the government drafts a man from civil life and puts him in the military service... and, thereafter, because the man does not show sufficient aptitude gives him a blue discharge, or a discharge without honor, that fact should not be permitted to prevent the man from receiving the benefits to which soldiers are generally entitled".
