Deoxyribonucleic acid (DNA) waxey ka kooban tahy Sokor 5 jibaaran ee laga yareeyey oksojiin Fosfat Kaydka guud: Labo(Purines) Adenine waxaa loo soo gaabiyaa (A) Guanine Waxaa loo soo gaabiyaa (G) Labo(Pyrimidines): Thymine waxaa loo soo gaabiyaa (T) Cytosine waxaa loo soo gaabiyaa (C) Qaab dhismeedka qayb ka mid ah helida laba xabbo DNA ah DNA (DNA) waa molecule oo ka kooban laba silsiladood (oo laga sameeyey nucleotid) oo isku xira si ay u sameeyaan helida laba xabbadood oo hirgeliya tilmaamaha hidaha ee loo isticmaalo koritaanka, kobcinta, shaqada iyo taranka dhammaan noolaha nool ee loo yaqaan iyo fayrasyo ​​fara badan. DNA iyo ribonucleic acid (RNA) waa acids nucleic; marka la barbar dhigo borotiinka, lipids iyo carbohydrateska adag (polysaccharides), asiidhooyinka nucleiciga ah waa mid ka mid ah afarta nooc ee macromolecules kuwaas oo muhiim u ah dhammaan noocyada nolosha ee la yaqaan. Labada qaybood ee DNA ayaa sidoo kale loo yaqaannaa polynucleotides tan iyo markii ay ka kooban yihiin unugyo monomeric fudud oo la yiraahdo nucleotides.