it is 3D structure of DNA.
Working parts of the model are pre-fabricated on the base in the duly working state, but the decorative model parts/pieces in the box are in the loose form and are to be posted by the student themselves. This is to ensure safe delivery of the parcel.
This is a handmade complete working model supported by rough study material to make a suitable projects report by the student. It is using Cardboard/Wooden base, Paper, Electronic-Electrical Components, Mechanical & Scientific goods as per the requirement of a particular model.