DNA is the information molecule. It stores instructions for making other large molecules, called proteins. These instructions are stored inside each of your cells, distributed among 46 long structures called chromosomes. These chromosomes are made up of thousands of shorter segments of DNA, called genes.

DNA is the material that carries all the information about how a living thing will look and function. For instance, DNA in humans determines such things as what color the eyes are and how the lungs work. Each piece of information is carried on a different section of the DNA. These sections are called genes. DNA is short for deoxyribonucleic acid.

DNA is a molecule found in most cells holding each person’s unique genetic code. It is responsible for coding proteins, which are essential to the growth and development of cells. Chromosomes are tightly coiled strands of DNA. Genes are sections of DNA that code individual proteins.

What is DNA? Deoxyribonucleic acid (DNA) is the chemical compound that contains the instructions needed to develop and direct the activities of nearly all living organisms. DNA molecules are made of two twisting, paired strands, often referred to as a double helix

DNA for Dummies DNA is an extremely long chain of molecules that contains all the information necessary for the life functions of a cell. The individual molecules that make up DNA are called nucleotides. There are only four nucleotides that are ever used, these are Adenine (A), Thymidine (T), Guanine (G), and Cytosine (C).