DNA Activity Model
Product Code : EL-BLE-10643
Quick answer: The DNA activity model is a double helix that students build themselves from plastic parts: colour-coded cytosine, adenine, guanine and thymine bases, phosphate strands and centre rods for the hydrogen bonds. It is used to teach DNA structure and base pairing, and it can be unzipped to demonstrate replication. Lab Exports manufactures it in Delhi for schools, colleges and universities.
Specifications
| Part | Details |
|---|---|
| Bases | Cytosine, adenine, guanine and thymine |
| Backbone | Connecting phosphate strands |
| Hydrogen bonds | Centre rod between paired bases |
| Base pairing | Colour-coded, specially shaped ends ensure correct base-pair alignment |
| Replication demonstration | Model can be unzipped |
| Stand | Sturdy metal base for rotation and display |
| Material | Durable plastic components |
How the model is used in teaching
DNA is a double helix: two sugar-phosphate strands run in opposite directions and are held together by pairs of bases joined by hydrogen bonds. Adenine always pairs with thymine and guanine with cytosine, so the sequence on one strand fixes the sequence on the other. Building the molecule piece by piece makes these rules concrete, because the shaped ends of the bases only line up correctly in the right pairs.
Once the helix is complete, the two strands can be unzipped down the middle. This shows how each strand serves as a template for a new partner, so that replication produces two identical molecules, each with one old and one new strand: the semi-conservative model of DNA replication.
- Sort the bases by colour and match each one to its complementary partner.
- Attach the base pairs to the phosphate strands, joining each pair with a centre rod for the hydrogen bonds.
- Twist the assembled ladder into a double helix on the metal base.
- Unzip the helix between the base pairs to show the strands separating at the start of replication.
Key features
- All four DNA bases, cytosine, adenine, guanine and thymine, in colour-coded parts
- Specially shaped ends ensure correct base-pair alignment
- Centre rods represent the hydrogen bonds between paired bases
- Unzips to demonstrate DNA replication
- Sturdy metal base lets the finished helix rotate for display
- Durable plastic parts for repeated assembly by different classes
Documentation and supply
Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the DNA activity model at its works in Laxmi Nagar, Delhi, and supplies it to schools, colleges and universities in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
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Frequently asked questions
Can students assemble the DNA activity model themselves?
Yes. Students build the double helix from the bases, phosphate strands and centre rods, and the shaped, colour-coded ends guide correct base pairing.
Does the DNA model show replication?
Yes. The helix can be unzipped between the base pairs to demonstrate how DNA separates during replication.
What is the price of the DNA activity model?
Prices are not published on the website. Add the DNA activity model to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-BLE-10643 and the quantity, to receive a quotation.
Does Lab Exports manufacture the DNA activity model?
Yes. Lab Exports manufactures the DNA activity model at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-BLE-10643.
Request a quote
Email [email protected] with the house code EL-BLE-10643 and the quantity, or add the DNA activity model to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
