Definition of dna in 200 words

deoxyribonucleic acid, a self-replicating material present in nearly all living organisms as the main constituent of chromthe fundamental and distinctive characteristics or qualities of someone or something, especially when regarded as unchangeable.osomes. It is the carrier of genetic information.DNA stands for deoxyribonucleic acid, sometimes called "the molecule of life," as almost all organisms have their genetic material codified as DNA. Since each person’s DNA is unique, "DNA typing" is a valuable tool in connecting suspects to crime scenes. You can also use the word less scientifically, as in “it’s just not in my DNA to sit through six hours of meetings.”