What is the primary function of DNA?

The primary function of DNA is to store and transmit genetic information. This is crucial because DNA contains the instructions for building and maintaining an organism. It is organized into genes, which encode the proteins necessary for various biological functions. During reproduction and cell division, DNA ensures that this genetic information is accurately passed on to new cells or offspring, maintaining the continuity of genetic traits across generations.

This role of DNA is fundamental to the processes of heredity and development, as it dictates how traits are expressed and how an organism grows. The structure of DNA, with its double helix formation and base pairing, is specifically designed to facilitate both the storing of this information and its replication, which is essential for cell function and life itself. Thus, the storage and transmission of genetic information is not only a primary function of DNA but also a cornerstone of biological inheritance.