Biology / Bio 1565 · Atom · ~20 seconds

Sequence-Tagged Sites

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A sequence-tagged site is a short DNA sequence with a known, unique chromosomal location, used as a landmark for sequence mapping.

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An expressed sequence tag from a cDNA library and a single sequence length polymorphism from a known marker are both sequence-tagged sites.

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A sequence-tagged site is defined by its unique known location, not by any biological function of the sequence itself.