DNA Gene Sequence - Exons and Introns

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∟DNA Gene Sequence - Exons and Introns

This section provides a quick introduction of the Genetic Translation process, which is the process of translating the nucleotide sequence of a mRNA (Messenger RNA) into the amino acid sequence linked with peptide bonds to build a new protein according to the genome codon map chart.

A gene stored in a DNA actually has two types of segments:

Exon - A segment of nucleotides that gets transcribed to the mRNA to code for proteins in the gene expression process.
Intron - A segment of nucleotides that is not transcribed to the mRNA and is not used in the gene expression process.

The diagram (source: biotechprimer.com) below shows how introns are removed during the alternative splicing step:

Here is a list of multiples of exons and introns representing a full genomic DNA sequence, which is mapped to its coding DNA (or mRNA) sequence, and its protein sequence.