3.3 – DNA Structure 3.3.1 - Outline DNA nucleotide structure in terms of sugar (deoxyribose), base and phosphate Nucleotides are formed from a pentose sugar, phosphate and a base. o
Phosphate links neighbouring sugars together (PO 43-)
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The sugar is either ribose for RNA or deoxyribose for DNA, which has one less oxygen
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Four types of bases, which comprise the coded genetic message