 
			 
			MCQOPTIONS
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				| 1. | In DNA, nucleotides are covalently joined together by | 
| A. | 3', 5' phosphodiester bonds to form a repetitive sugar-phosphate chain | 
| B. | 2', 5' phosphodiester bonds to form a repetitive sugar-phosphate chain | 
| C. | 2', 3' phosphodiester bonds to form a repetitive sugar-phosphate chain | 
| D. | 3', 4' phosphodiester bonds to form a repetitive sugar-phosphate chain | 
| Answer» B. 2', 5' phosphodiester bonds to form a repetitive sugar-phosphate chain | |