And we'll see why that's important in just a moment. Now, if we examine any one of these base pairs, so let's say this base pair and this base pair, the distance between any two base pairs is given to be 3.4 angstromes, or equivalently 0.3 nm. Now, what they were also able to show is that in a single turn of a DNA molecule, there is a distance of 34 angstromes. And if we divide this quantity into this, we get a value of ten. So 34 angstroms divided by 3.4 angstroms gives us ten. And what that means is there are ten bases in every single turn of that DNA molecule.