A reagent for analyzing DNA comprising: a plurality of encoded particles where a detectable code is integrated into the interior of the particles, where the plurality of encoded particles has joined amplicons amplified from a template DNA sequence, each individual bound amplicon it comprises a DNA segment derived from primers and a DNA sequence identical to a random part of the template DNA sequence, where the amplicons together substantially represent the complete template DNA and where the nucleic acid sequence identical to a random part of the sequence Template DNA of each individual amplicon is shorter than the complete template DNA.
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