A synthetic molecule called peptide nucleic acid (PNA) combines the information-storage properties of DNA with the chemical stability of a protein like backbone. Drugs based on PNA would achieve therapeutic effects by binding to specific base sequences of DNA or RNA, repressing or promoting the corresponding gene. A Triple stranded DNA is a structure of DNA in which three oligonucleotides wind around each other and form a triple helix. Ribonucleic acid (RNA) is a polymeric molecule. It's implicated in a varied sort of biological roles in coding, decoding, regulation, and expression of genes. DNA) is a molecule that encodes the genetic instructions used in the development and functioning of all known living organisms and many viruses. Nucleic acids are polymeric macromolecules, or large biological molecules, essential for all known forms of life. Together with proteins, nucleic acids are the most important biological macromolecules; each are found in abundance in all living things, where they function in encoding, transmitting and expressing genetic information—in other words, information is conveyed through the nucleic acid sequence, or the order of nucleotides within a DNA or RNA molecule. The two complementary strands of double-stranded DNA (dsDNA) are usually differentiated as the "sense" strand and the "antisense" strand. Despite the great stability of PNA’s, they do not remain in an animal for long. The essence of life is a network of chemical reactions functioning in a state that is relatively stable yet not in equilibrium. The Earth formed about 4.5 billion years ago. The earliest clear evidence of life on Earth dates from 3.5 billion years ago, during the Eoarchean Era after a geological crust started to solidify following the earlier molten Hadean Eon. There
