What is DNA?
DNA is deoxyribonucleic acid. It is a molecule that is present in nearly all of our cells, responsible for containing all of an individual or living being’s genetic information. This information is unique and unrepeatable in each being, as the combination of elements is constructed in a unique manner. This molecule holds the code that determines an individual’s function and characteristics. This acid also contains the genetic data that will be hereditary; that will transmit what we are to our children, and they to theirs, and so on successively, from generation to generation.
Each DNA molecule is like a very long word. It has the shape of a double helix formed by a combination of four letters (nucleotides); A, T, C and G (adenine, thymine, cytosine and guanine). A simple combination of four letters, of varying length and order, gives rise to something as complex as a living being.