3B Scientific 1005300 DNA Double Helix Model, Student Kit

Simple differentiation of components by means of six easily distinguishable colours Purine bases and pyrimidine bases differ in size No possibility of confusion when assembling the adenine-thymine and guanine-cytosine base pairs Student kit with colour-coded components allowing quick and easy assembly of spiral DNA double helix Clear depiction of how the helix turns through a full 360° after every ten base pairs