(1) It is capable of replication and forms its own carbon copies.

(2) Constancy of amount of DNA per cell.

(3) DNA is much stable during cellular metabolism.

(4) It undergoes mutation and thus paves way for variation and evolution.

(5) Griffith’s transformation experiments on Diplococcus pneumoniae provided direct evidence for DNA as genetic material.

(6) Hershey and Chase with their experiments of transduction concluded that DNA is the genetic material.

(7) The chromosomes act as vehicles of hereditary transmission and DNA is the main component of chromosomes.

(8) It regulates cellular activities.