Multiple ChoiceIn a DNA strand, how can you identify the 5' and 3' ends based on the chemical structure of the sugar-phosphate backbone?12views
Multiple ChoiceThe pairing of nitrogenous bases in DNA is specific because which feature ensures that adenine pairs with thymine and guanine pairs with cytosine?21views
Multiple ChoiceIn double-stranded DNA, guanine (G) always base-pairs with which nitrogenous base?2views
Multiple ChoiceIn the B-form DNA double helix, approximately how many times longer is one helical turn than the diameter (width) of the helix?13views
Multiple ChoiceIn DNA structure, which nitrogenous base forms complementary base pairs with thymine (T) via hydrogen bonds?9views