wwwaazup Messages 15 Reaction score 0 Thread starter Nov 20, 2008 #1 In DNA, the base pairs are on the inside of the heli. Eplain why purine-purine and pyrimidine-pyrimidine base pairs do not occur, only purine-pyrimidine base pairs?
In DNA, the base pairs are on the inside of the heli. Eplain why purine-purine and pyrimidine-pyrimidine base pairs do not occur, only purine-pyrimidine base pairs?
chemisttree Science Advisor Homework Helper Gold Member Messages 3,954 Reaction score 777 Nov 21, 2008 #2 Review Watson-Crick base pairing.