What regulates gene expression

A complex set of interactions between genes, rna molecules, proteins (including transcription factors) and other components of the expression system determine when and where specific genes are activated and the amount of protein or rna.The appropriate control of synthesis and secretion of the gonadotropin hormones lh and fsh by pituitary gonadotropes is essential for the regulation of reproduction.This type of control occurs through regulation of the mrna's survival time or ability to be translated.The controls that act on gene expression (i.e., the ability of a gene to produce a biologically active protein) are much more complex in eukaryotes than in prokaryotes.Evolution of gene regulation prokaryotic cells can only regulate gene expression by controlling the.Regulation of gene expression by various mechanisms that alter the life span of messenger rna or the efficiency of translation.

It would require a significant amount of energy for an organism to express every gene at all times, so it is more energy efficient to turn on the genes only when they are required.Genes whose products are continuously required by the cell hence they continuously transcribe and translate.Three ways that eukaryotes regulate gene expression will be discussed:The process of turning on a gene to produce rna and protein is called gene expression.The rna and protein products of many genes serve to regulate the expression of other genes.It is this regulation that determines when and how much of a protein to.

In addition, only expressing a subset of genes in each cell saves space because dna must be unwound.