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Topic: DNA sequencing how can two A's be together  (Read 3832 times)

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Offline kylefoley76

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DNA sequencing how can two A's be together
« on: November 04, 2010, 09:03:18 AM »
http://en.wikipedia.org/wiki/File:DNA_sequence.svg

if you look the above image, you'll see that in one instance three A's are together.  How is that possible? i thought A binds to G and T binds to C

Offline sjb

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Re: DNA sequencing how can two A's be together
« Reply #1 on: November 04, 2010, 09:59:02 AM »
http://en.wikipedia.org/wiki/File:DNA_sequence.svg

if you look the above image, you'll see that in one instance three A's are together.  How is that possible? i thought A binds to G and T binds to C

I think you are confusing the hydrogen bonding between two strands of [R/D]NA which, as you say, is A:G and T/U:C, and the chemical bonding in each strand, which could be any combination or permutation of A, C, G, and T/U.

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