What is Gene Expression

Gene expression is the process by which a gene’s DNA sequence is converted into functional proteins. Some genes are turned on (expressed) or turned off (repressed) when there is a change in external conditions or stimuli.

The abundance of mRNAs transcribed from the DNA of a gene.

Synthesis process of mRNA from a gene.

Process by which the inheritable information which comprises a gene, such as the DNA sequence, is made manifest as a physical and biologically functional gene product, such as protein or RNA

The process by which information from a gene is used in the synthesis of a functional gene product.

The process in which information in a gene is transduced to yield one or more gene products (proteins and/or non-protein-coding RNAs).

In the field of molecular biology, gene expression profiling is the measure of the activity (expression) of thousands of genes at a time, to create a global picture of cellular function. These profiles can, for example, distinguish between cells that are in proliferation, or show how the cells react to a particular treatment. Many experiments of this type measure an entire genome simultaneously. DNA Microarray technology measures the relative activity of target genes previously identified.

Gene expression is the transformation of a gene’s information by transcription and translation ( Lewin, 2002 )

The measure of the activity (expression) of thousands of genes at a time, to create a global picture of cellular function. These profiles can, for example, distinguish between cells that are in proliferation, or show how the cells react to a particular treatment. Many experiments of this type measure an entire genome simultaneously. DNA Microarray technology measures the relative activity of target genes previously identified.

It is the process of formation of protein, intermediate steps being conversion from DNA to mRNA.

Gene expression is the process by which the inheritable information in a gene, such as the DNA sequence, is made into a functional gene product, such as protein or RNA.

The process in which information in a gene is transduced to yield one or more gene products (proteins and/or non-protein-coding RNAs).

It is the process by which information from a gene is used in the synthesis of a functional gene product. It can also be viewed as the level of activity of a gene or group of genes.

It is the process by which information from a gene is used to synthesize a functional gene product that enables it to produce end products, protein or non-coding RNA, and ultimately affect a phenotype as the final effect.

The process by which a gene’s coded information is translated into the proteins present and operating in the cell.

The conversion of information from gene to protein via transcription and translation.

Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product such as proteins.