The mRNA molecule is a key component in the transfer of genetic information from DNA to proteins. It is created by transcribing DNA and carries the instructions for making specific proteins through a triplet code. This code is deciphered during translation, where mRNA codons correspond to specific amino acids in the protein. By sequencing mRNA, both known and novel transcripts can be identified and transcript abundance can be measured. Furthermore, the genetic code table shows how three-letter sequences of mRNA nucleotides correspond to specific amino acids or stop codons. mRNA is also used in reverse transcription to deduce the sequence of a gene. Overall, mRNA plays a crucial role in gene expression and protein synthesis.