DNA stands for deoxyribonucleic acid. It is what your chromosomes are made of, and it is passed down through families. DNA is found in every cell of your body. Most DNA is located within the nucleus of the cell, but some is also found in the mitochondria (the cell’s ‘powerhouse’).
DNA is composed of four chemical bases: adenine (A), guanine (G), cytosine (C) and thymine (T). The order that these four bases are placed in determines the genetic code of that individual. This code provides all the instructions for development, survival and reproduction.