gene expression

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expression

 [eks-presh´un]
1. the aspect or appearance of the face as determined by the physical or emotional state.
2. the act of squeezing out or evacuating by pressure.
gene expression
1. the flow of genetic information from gene to protein.
2. the process, or the regulation of the process, by which the effects of a gene are manifested.
3. the manifestation of a heritable trait in an individual carrying the gene or genes that determine it.

gene ex·pres·sion

1. the detectable effect of a gene.
2. appearance of an inherited trait; for many genetic (for example, recessiveness, hypostasis, parastasis) and environmental (the absence of pertinent challenges) reasons, a gene may not be expressed at all. In those circumstances, it will have no impact on Darwinian evolution.

gene expression

Genetics The process by which a gene's coded information is translated into the structures present and operating in the cell. See Gene, mRNA, Protein, RNA, Transcription, Translation, tRNA.

gene ex·pres·sion

(jēn eks-presh'ŭn)
1. The detectable effect of a gene.
2. Appearance of an inherited trait; for many reasons, a gene may not be expressed at all.

gene expression

the processes effecting the transfer of information encoded in the GENE to the functional gene product (PROTEIN or RNA). Generally, gene expression is equated with the processes of TRANSCRIPTION and TRANSLATION. However, where the gene product is RNA only transcription is involved. A gene that is expressed is an active gene.
References in periodicals archive ?
Indeed, as much as ultraviolet radiation induces the expression of specific genes in the epidermis, it should be possible to identify ingredients able to stimulate the expression of genes involved in the removal of UV-provoked damage.
Lethal Imipenem Exposure Is Associated with Differential Expression of Genes Encoding Metabolic Regulatory Pathways.
Consistent with the literature, short-term IFN-[alpha] stimulation of BMM was associated with increased expression of genes associated with glycolysis (HK2, HK3, PGM2, PFKP, PFKFB3, and INSR) and lactate production (LDHD) and decreased expression of genes associated with pyruvate production (PDK3, PDP1, and DLD) and flux through the TCA cycle (DLD, DLST, and SDHA).
Therefore, the antler mesenchyme of male reindeer showed a higher expression of gene Af3, this may be one reason that the antler of male reindeer is obviously bigger than the female.
Clusters 5 and 11 grouped together transcripts for which expression decreased from day 4 to day 7 but increased from day 7 to day 12, whereas the expression of genes included in cluster 8 decreased from day 4 to day 7 and from day 7 to day 12.
The expression of genes for iNOS in healthy, injured untreated, and injured treated corneas was quantified by real-time PCR (Figure 3(m)).
The investigators used the real-time polymerase chain reaction to monitor the expression of genes that may be involved in the acid and cold-induced VBNC process.
The study results showed that feeding krill powder in addition to a high fat diet to mice with persistent inflammation increased degradation of fatty acids, reduced the generation of fat, and lowered the expression of genes involved in cholesterol and glucose metabolism that resulted in improved blood and liver lipid levels.
Neonatal genistein treatment (50 pg/kg body weight/day) resulted in substantial changes in the expression of genes that modulate neonatal oviduct morphogenesis, including Hoxa, Wnt, and hedgehog signaling genes.
The scientists found that participants' surgery triggered a 22 percent drop in the expression of genes that promote the production of toxic beta-amyloid protein, which forms a sticky plaque in the brain that is a hallmark of AD.
A molecular analysis showed that apoptosis was triggered by decreasing the expression of genes that cancer cells use to maintain their survival, and increasing the expression of genes that promote apoptosis.
During liver regeneration, the signal transducers and activators of transcription (STAT) family of transcription factors is important for driving the coordinated expression of genes needed to promote hepatocyte proliferation.