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| Description: Secondary and Tertiary Structure of Nucleic Acids The two major forms of polynucleotide secondary structure are called A and B. Most DNA is in the B form Double-stranded RNA and DNA-RNA hybrids are in the A form. The 2’ hydroxyl of RNA lies too close to the phosphate and carbon 8 on the adjacent base for RNA to adopt a B form. Picture Stats: Views: 393 Filesize: 438.08kB Height: 913 Width: 588 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=33880 |