<p><strong>DNA sequencing</strong>&nbsp;is the process of determining the order of&nbsp;nucleotides&nbsp;in&nbsp;DNA. It includes any method or technology that is used to determine the order of the four bases:&nbsp;<a href="https://en.wikipedia.org/wiki/Adenine" title="Adenine">adenine</a>,&nbsp;<a href="https://en.wikipedia.org/wiki/Guanine" title="Guanine">guanine</a>,&nbsp;<a href="https://en.wikipedia.org/wiki/Cytosine" title="Cytosine">cytosine</a>, and&nbsp;<a href="https://en.wikipedia.org/wiki/Thymine" title="Thymine">thymine</a>. The advent of rapid DNA sequencing methods has greatly accelerated biological and medical research and discovery.</p><ref>{{cite web|url=https://theconversation.com/introducing-dark-dna-the-phenomenon-that-could-change-how-we-think-about-evolution-82867|title=Introducing ‘dark DNA’ – the phenomenon that could change how we think about evolution}}</ref>