The DNA are infinitesimally, tiny molecules found in evry living cell. In a fertilized human egg, all the DNA contents would weigh only about two ten trillionths of an ounce taken from each parents. One DNA molecule is a helix looking like a coiled ladder tightly packed in a single cell. It carries information much like a code consisting of a four basic control chemicals- adenine, thymine, guanine and cytosine.
The rungs of the ladder are amde up to two codes units, the same two invariably pairing with one another. In terms of the alphabet. A pairs only with B and C with D in the different sequence which are limitless in variance so much so that multiple individual variations are possible.
This is one of the same way in the million of cells in the body. Another feat it accomplishes is the protein manufacture within the cell- so essential in providing blood and muscle to the body.
Each cell simutaneously make different kinds of protein. Protein are composed of 20 amino acids and for each protein a set of direction is carried on a gene of the long DNA molecule.
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