Molecular structure of DNA

dna structure DNA is a double helical structure composed of nucleotides The two helices are joined together by hydrogen bonds The DNA also bears a sugar-phosphate backbone

DNA Structure As proposed by Watson and Crick, deoxyribonucleic acid consists of two long nucleotide chains The two nucleotide chains twist around one dnabet999 A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits Each of these chains is known as a DNA chain, or a DNA