Answer: -carries instructions of polypeptide synthesis from nucleus to ribosomes in the cytoplasm
What is the role mRNA?

In molecular biology messenger RNA (mRNA) is a single-stranded molecule of RNA that corresponds to the genetic sequence of a gene and is read by a ribosome in the process of synthesizing a protein. Transcription is the process of copying a gene from the DNA into mRNA. This process is slightly different in eukaryotes and prokaryotes including that prokaryotic RNA polymerase associates with DN…

In molecular biology messenger RNA (mRNA) is a single-stranded molecule of RNA that corresponds to the genetic sequence of a gene and is read by a ribosome in the process of synthesizing a protein. Transcription is the process of copying a gene from the DNA into mRNA. This process is slightly different in eukaryotes and prokaryotes including that prokaryotic RNA polymerase associates with DNA-processing enzymes during transcription so that processing can proceed during transcription. Therefore this causes the new mRNA strand to become double-stranded by producing a complementary strand known as the transfer RNA (tRNA) strand. In addition the RNA is unable to form structures from base-pairing. Moreover the template for mRNA is the complementary strand of tRNA which is identical in sequence to the anticodon sequence that the DNA binds to. The short-lived unprocessed or partially processed product is termed precursor mRNA or pre-mRNA; once completely processed it is termed mature mRNA. mRNA is created during the process of transcription where an enzyme (RNA polymerase) converts the gene into primary transcript mRNA (also known as pre-mRNA). This pre-mRNA usually still contains introns regions that will not go on to code for the final amino acid sequence. These are removed in the process of RNA splicing leaving only exons regions that will encode the protein. This exon sequence constitutes mature mRNA. Mature mRNA is then read by the ribosome and utilising amino acids carried by transfer RNA the ribosome creates the protein. This process is known as translation. All of these processes form part of the central dogma of molecular biology which describes the flow of genetic information in a biological system. As in DNA genetic information in mRNA is contained in the sequence of nucleotides which are arranged into codons consisting of three ribonucleotides each. Each codon codes for a specific amino acid except the stop codons which terminate protein synthesis. The t… Read more on Wikipedia

The brief existence of an mRNA molecule begins with transcription and ultimately ends in degradation. During its life an mRNA molecule may also be processed edited and transported prior to translation. Eukaryotic mRNA molecules often require extensive processing and transport while prokaryotic mRNA molecules do not. A molecule of eukaryotic mRNA and the proteins surroundi…

The brief existence of an mRNA molecule begins with transcription and ultimatel...

 This free site is ad-supported. Learn more
​