Question

In dna sequence analysis, it is quite common to obtain two sequences like “acgta” and “actgac” and attempt to understand how ‘similar’ they are.

Answer 1

DNA is made of nucleotides that binds together forming as a DNA sequence which dictates an organism's characteristics and features. Moreover, these nucleotides are considered in two forms; the purine (AG) and pyramidine (CTU).
Now similarities between two DNA sequences can be obtained through observance of their 3' and 5' tails.