Recall that DNA is a double-stranded molecule while RNA is only single-stranded. In this article, we will only discuss mRNA in detail. These chains later undergo post-transcriptional modification to get their final shape. However, eukaryotic cells have three types of RNA polymerase Īll types of RNA are first generated in the form of a linear poly-ribonucleotide chain. The p[prokaryotic cells have only one type of RNA polymerase that synthesizes mall types of RNA. These enzymes read the nucleotide sequence of the gene and construct RNA molecules with a complementary nucleotide sequence using new nucleotides. The process of transcription requires certain enzymes called RNA polymerases. It should be kept in mind that all types of RNA are made from DNA via the process of transcription. This process of making an RNA transcript of a gene is called transcription. This mRNA molecule serves as a transcript of that particular gene. The nucleotide sequence present in a gene is copied into the nucleotide sequence of mRNA. The region of DNA that codes for one particular protein is called a gene.
in this article, we will discuss different steps of gene expression as well as its regulation. The genetic expression or gene expression is also sometimes called the central dogma of the cell. Gene expression is the process by which proteins are synthesized from the information present in the DNA. The genetic material controls al the traits of a cell by guiding and controlling the synthesis of proteins. This DNA is present in the nuclei of eukaryotic cells and contains the information for all the traits expressed by the cell. The genetic information is present in all the organisms in the form of DNA. What is the end product of gene expression?.What are the stages of gene expression?.Transcription factors, Transcription activators, and Enhancers.
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