Here's why:
* DNA contains the instructions: DNA is a complex molecule that stores the genetic information needed to build and maintain an organism. It contains the blueprints for all the proteins and other molecules that make up a living being.
* DNA is replicated: When a cell divides, its DNA is replicated so that each new cell receives a complete copy of the genetic code. This ensures the continuity of genetic information from one generation to the next.
* RNA is a copy: While DNA is the master copy, RNA (ribonucleic acid) is a working copy. RNA molecules are created from DNA templates and are involved in the process of building proteins.
Therefore, DNA holds the primary blueprint of life and is considered the master copy of an organism's genetic code.
