(a) Bases and phosphates
(b) Sugars, bases and phosphates
(c) Sugars and bases
(d) Sugars and phosphates
Answer (b) Sugars, bases and phosphates
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(a) Bases and phosphates
(b) Sugars, bases and phosphates
(c) Sugars and bases
(d) Sugars and phosphates
Answer (b) Sugars, bases and phosphates