The genetic material found in all living organisms is called DNA (deoxyribonucleic acid). DNA carries the instructions for the development, function, and reproduction of all known living organisms and some viruses. It consists of two strands forming a double helix structure, comprised of nucleotide sequences that encode genetic information. The sequence of these nucleotides determines an organism's traits and functions. DNA replication is fundamental for cell division, ensuring that each new cell receives an exact copy of genetic information.