تركيب DNA ▪️DNA has two strands ▪️The backbone of DNA is phosphate deoxyriboose ▪️sugars connected by phosphodiester bonds ▪️covalent bonds be

تركيب DNA ▪️DNA has two strands ▪️The backbone of DNA is phosphate deoxyriboose ▪️sugars connected by phosphodiester bonds ▪️covalent bonds be