State the biological importance of nucleic acids.

(N/A) Nucleic acids are essential for the survival and continuity of life. Their biological importance is as follows:
$1$. Heredity: The nucleus of a living cell is responsible for the transmission of inherent characters,known as heredity. The particles in the nucleus responsible for heredity are called chromosomes,which are composed of proteins and nucleic acids.
$2$. Species Identity: $DNA$ is exclusively responsible for maintaining the identity of different species of organisms for millions of years. $A$ $DNA$ molecule is capable of self-duplication during cell division,ensuring that identical $DNA$ strands are transferred to daughter cells.
$3$. Protein Synthesis: Nucleic acids play a crucial role in protein synthesis. While proteins are synthesized by various $RNA$ molecules in the cell,the genetic message or instructions for the synthesis of specific proteins are encoded within the $DNA$.