Upstream and Downstream (DNA)

Upstream And Downstream (DNA)

In molecular biology and genetics, upstream and downstream both refer to a relative position in DNA or RNA. Each strand of DNA or RNA has a 5' end and a 3' end, so named for the carbons on the deoxyribose (or ribose) ring. Relative to the position on the strand, downstream is the region towards the 3' end of the strand. Since DNA strands run in opposite directions, downstream on one strand is upstream on the other strand.

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Famous quotes containing the word downstream:

    Building up a family’s fortune is like moving earth with a needle, but losing a family’s fortune can be as swift as a boat rushing downstream with the current.
    Chinese proverb.