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  PCR GLOSSARY: (U)

 

 

Upstream

- In molecular biology, the stretch of DNA base pairs that lie in the 5´ direction from the site of initiation of transcription. Usually the first transcribed base is designated +1 and the upstream nucleotides are marked with minus signs, e.g., -1, -10. Also, to the 5´ side of a particular gene or sequence of nucleotides.
Definition from:
www.fao.org/docrep/003/X3910E/X3910E24.htm

- The region extending in the 5' direction from a gene
Definition from:
Hypermedia Glossary Of Genetic Terms.


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