Replication:

The genetic information for the cell is comprised in the sequence of the bases A, T, G and C that are adenine, thymine, guanine and cytosine correspondingly in the DNA particle. In one chain the linear sequence of bases of the double helix controls the sequence within second chain. The two chains mix together such as a glove and a hand. They split and about the hand is made a fresh glove, and within the glove is prepared a new hand. So, the pattern is saved in the two new molecules of DNA.