there are how many nucleotide's in 34A°? Share with your friends Share 0 Fauzia answered this In DNA double helix, one helical turn is of 34Å, in one helical turn, there are 10 base pairs of nucleotide, therefore the number of nucleotides are 20 nucleotide. 0 View Full Answer Chetana Mhaske answered this there are 20 nucleotides in 34A. 0