MolecularMan14 Posted September 7, 2004 Share Posted September 7, 2004 I dont fully understand the question, and it doesnt seem to be in the book Link to comment Share on other sites More sharing options...
YT2095 Posted September 8, 2004 Share Posted September 8, 2004 do you mean purines and pyrimadines? Link to comment Share on other sites More sharing options...
Skye Posted September 8, 2004 Share Posted September 8, 2004 I guess it means why does A bind to T, and C with G. It it because of how the hydrogen bonding sites of the two bases align. Aside from adenine, each base has at least one =O group. These have to line up with a hydrogen on the other base. For adenine a N atom within the ring binds to a hydrogen on thymine. When two other bases pair up (called 'non-canonical' base pairing) the hydrogen bonding sites are usually further apart, and this weaken the bond between the bases. Link to comment Share on other sites More sharing options...
MolecularMan14 Posted September 9, 2004 Author Share Posted September 9, 2004 Thanks, I basically described the basic difference in the bonding sites. Link to comment Share on other sites More sharing options...
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