Scale: 30 x 10E6 :1. Based on data gained from x-ray diffraction studies, the model shows a section of a DNA double helix. The conformation of this double helix corresponds to the so-called B-DNA, which is physiologically more significant when compared with the respective A or Z form. This is a matter of a clockwise double helix with 10.5 green base pairs per coil and equivalent to a passage height of approx. 3.4 nm. It complies, in the main, with the model of the DNA structure developed by Watson and Crick in 1953. Mounted on a rotating stand with base.
