Deoxyribonucleic acid (DNA) is an extremely long, double-stranded nucleic acid molecule that takes the shape of a long double helix, and is the primary component of chromosomes. This molecule carries the genetic code of an organism in segments along its strands. Chromosomes are made of DNA and are found in the nucleus of the cells of an organism, as well as in many viruses.
DNA has been described as a set of instructions for an entire organism that is found in each cell of that organism. It is made from the same material in every species on our planet and is simply arranged differently to produce different species. It is also the reason that one species cannot give birth to another, and that when there is any dysfunction in DNA, it causes major problems to an organism.
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