The Orbit Proview DNA Model Kit is a detailed large-scale model kit which helps pupils to understand the chemistry and structure of DNA enabling group viewing and demonstration. It engages student as they work together to create the sub assemblies and then fit the model together. Build and study the composition of the subassemblies: Thymine-Adenine; Cytosine-Guanine sugar rings and phosphate groups. Each atom is colour-coded with the correct binding angle. Understand the different types of bonding different colours indicate covalent or hydrogen bonding. Easy construction; attach the subassemblies onto pre-assembled atom pieces on the nylon wires for a spectacular end result. The stand in the image is for illustration only & does not come included with the kit.Assembled dimensions: (H)850mm x (W)350mmKit includes:750 atoms850 bonding strawsSupport plates for hanging with wires and joining pieces fixed ready for assembly (no stand included)Assembly instructions and worksheet examining the structure of DNA and the mechanism of transcription.