Structure of a Dideoxynucleotide
A dideoxynucleotide is similar in structure to a deoxynucleotide, but is missing the 3' hydroxyl group (indicated by the box). When a dideoxynucleotide is incorporated into a DNA strand, DNA synthesis stops.
Source
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"OpenStax College, Whole-Genome Sequencing. October 16, 2013."
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OpenStax CNX
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