Alright, so DNA sequencing is the process of determining the sequence of nucleotides, or basically the order of them. The nucleotides are adenine, guanine, cytosine, and thymine, AKA: (As, Gs, Cs, and Ts)
Let me explain: All strands of DNA have a specific construction of nucleotides, which basically form the structural unit of DNA.
DNA sequencing is a process of identifying those nucleotides and how their composition is. It's determined through the use of various methods and technologies.
If you've ever seen a chart involving dozens of C's, T's, A's, and G's, then that's a model of the nucleotides.
~Hope this helps!
