The two major processes that the DNA performs in the cell include:
Storage of genetic information
Synthesis of protein for the regulation of cellular activities.
The DNA stores the genetic information relating to the cell and ensures that the integrity of stored information is preserved and inherited by subsequent generations. It does this by replicating itself in a semi-conservative way and copies of the replicated DNA are inherited by subsequent generations. This is why the DNA is otherwise known as the molecule of hereditary.
DNA is also at the center of protein synthesis. It forms the template for the synthesis of RNA in a process known as transcription and the RNA forms the genetic codes for the synthesis of protein.
Hence, <u>storage of genetic information</u> and <u>indirect regulation of cellular processes</u> are two major processes attributable to the DNA.