The 3 elements of gene expression: Regulation of transcription can be broken down into three main routes of influence;
genetic (direct interaction of a controlling factor with the gene), modulation interaction of a controlling factor with the transcription machinery, and epigenetic (non-sequence changes in DNA structure that influence transcription).
Genes are composed of deoxyribonucleic acid (DNA), except for some viruses, which have genes that include a carefully associated compound called ribonucleic acid (RNA). A DNA molecule consists of two chains of nucleotides that wind approximately every different to resemble a twisted ladder.
Gene expression is the system of turning on a selected gene to begin making messenger RNA. The messenger RNA can then perform intended jobs inside the cell, such as forming proteins. Gene expression controls both whether or not the messenger RNA is made, as well as how a whole lot of messenger RNA is made at that time.
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