Match the heading to the short text.

It is a chemical that presents at the centre of the cells of living things, that controls the structure and purpose of each cell and carries genetic information during reproduction. It is a molecule that is composed of two polynucleotide chains coiling around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all of the known organisms and many viruses.

• DEOXYRIBONUCLEIC ACID
• ORGANISM CLONING
• PARTHENOGENESIS
• NATURAl CLONING
• CELL CLONING
• MOLECULAR CLONING
• CLONING
• MOLECULE
• SOMATIC-CELL NUCLEAR TRANSFER
• A CELL