Model of DNA (Helical)
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Product Code : SCL-BLE-11718
Model of DNA (Helical) (SKU SCL-BLE-11718) is an assembled PVC model of the DNA double helix: two long parallel chains joined by short cross bars at regular intervals and coiled spirally around each other. The bases face the interior while the sugar and phosphate units form the outer backbone, matching the Watson–Crick picture taught in Class 12 and B.Sc. genetics. Science Lab Supplies offers this model from Ambala, India to schools, colleges, coaching centres and resellers.
Specifications
Each structural feature of the helical DNA model has its own row in the table. In short, it is made of PVC with non-toxic colouring and comes with its parts already assembled, showing two coiled chains, regular cross bars for the base pairs, bases inside and a sugar-phosphate backbone outside.
| Specification | Value |
|---|---|
| SKU | SCL-BLE-11718 |
| Model type | DNA double helix model |
| Material | PVC |
| Colouring | Non-toxic |
| Assembly | Parts supplied assembled |
| Chains (strands) | Two long parallel chains |
| Cross bars | Short cross bars joining the chains at regular intervals |
| Coiling | Chains spirally coiled about each other to form a double helix |
| Bases | Face the interior of the double helix |
| Backbone | Sugar and phosphate components on the outside |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Helical DNA Model
Teachers use the model to explain the double-helix structure of DNA: how two strands run side by side, how paired bases form the rungs between them, and why the sugar-phosphate chains sit on the outside. It gives a fixed reference shape for lessons on replication, base pairing and genetic information.
- NCERT Class 12 Biology, Molecular Basis of Inheritance: structure of the DNA double helix.
- Class 12 and B.Sc. genetics: complementary base pairing and the antiparallel strands.
- B.Sc. biotechnology and molecular biology: introducing DNA replication and transcription.
- Letting students build their own helix with the DNA Model Kit, and placing DNA in the nucleus on the Superstructure of the Cell (With Cell Organelles) model.
Standard Scope of Supply
One helical DNA model in PVC with non-toxic colouring is supplied, with its parts assembled. Build-it-yourself DNA kits, nucleotide sets and wall charts are separate products, and any of them can be added to the same quotation for a genetics or molecular biology class.
Packing, MOQ and Lead Time
Science Lab Supplies can quote a single DNA model for a teacher's desk or several for a genetics laboratory and group work. The quotation lists the packing, delivery time and price for that quantity, and nucleotide or protein models can sit on the same quotation.
As the holder of an Importer-Exporter Code, Science Lab Supplies can ship to buyers in South Africa, Qatar, Sri Lanka, Vietnam, Malaysia and Peru. Pricing for the DNA model can be requested on the contact page; the enquiry cart collects it with other genetics items, and schools buying by tender can follow the lab tender page.
Frequently Asked Questions
What does the helical DNA model show?
It shows the DNA molecule as two long chains joined by short cross bars and spirally coiled into a double helix, with the bases on the inside and the sugar and phosphate backbone on the outside.
Does the model need to be assembled?
No. The model comes with its parts already assembled, so it is ready for a demonstration as soon as it is unpacked. For a hands-on build activity, a separate DNA assembly kit can be quoted.
Who supplies the Model of DNA (Helical)?
Genetics teachers and distributors can order it from Science Lab Supplies, a laboratory equipment supplier in India working from Ambala, which quotes, packs and dispatches the model with any related biology items.
Which classes use a DNA double helix model?
It suits Class 12 lessons on the molecular basis of inheritance and B.Sc. genetics, biotechnology and molecular biology courses, where the structure of DNA underpins replication, transcription and base pairing.
Related DNA and Molecular Biology Models
These models, kits and the chart take the double helix further, into nucleotides, replication, transcription and proteins. Pairing an assembled helix with a build-it-yourself kit lets students first observe the structure and then construct it, and every item below can share the DNA model's quotation.
- DNA Double Helix Model, 22 Segments — build-your-own right-rotating helix with 11 of each base and 44 deoxyribose and 44 phosphate parts.
- DNA Structure Model, Plastic Assembly Kit — 12 base-pair kit, 12 x 12 x 40 cm, whose helix can be pulled apart into two strands.
- DNA Model on Base — board-mounted DNA segment with numbered key card, showing the mechanism of replication.
- DNA - RNA Model — shows DNA and the transcription of RNA; stand included, height approx. 500 mm.
- Simplified Nucleotide Models for Students — PVC nucleotide models with non-toxic colouring and assembled parts.
- Protein Model — PVC protein model with non-toxic colouring for school and college biology teaching.
- The Structure of DNA — laminated wall chart, 70 x 100 cm.
Browse the full Biology Lab Equipment range, the Human System Model range for more DNA models, or all school lab equipment.
Last updated: 9 October 2026
