Dna (noun)
alternative form of DNA
Wiktionary
Dna (noun)
deoxyribonucleic acid, a self-replicating material which is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
Dna (noun)
the fundamental and distinctive characteristics or qualities of someone or something, especially when regarded as unchangeable
“men just don’t get shopping—it’s not in our DNA”
“diversity is part of the company’s DNA”
Rna (noun)
ribonucleic acid, a nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins, although in some viruses RNA rather than DNA carries the genetic information.
Oxford Dictionary