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The base sequence of DNA refers to the order of

(a) the phosphate molecules

(b) the nitrogen bases

(c) the sugar molecules

User Columbia
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2 Answers

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b) the nitrogen bases
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Because there are four naturally occurring nitrogenous bases, there are four different types of DNA nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C).
User Ryan Abbott
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answer the nitrogen bases

User Leishman
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