QH 3212 DNA Structure

Size(cm):23x22x68.5
The unique plastic for allows you to assemble the model and then twist it into a double helix,instead of building it around a center post as in other mod-els.Each of the four nitrogenous bases comes in a different unlabeled color,so students can design their own base pair ciding.The model is removable from the plastic base and can be extended to its full length to demonstrate strand separation.