The following information is from the APH website:
- 32 interlocking DNA subunits
- 32 interlocking RNA subunits
- Large print guidebook
- Accessible HTML and BRF versions of the guidebook are available for download through the APH website.
This excellent set from APH provides clear tactile differentiation of the components of DNA and the componenets of RNA. The DNA nucleotides are clearly differentiated from the RNA nucleotides both tactually and visually.
The bases are labeled on either side in print and large print so that both strands of DNA are easily read.
Base-pairing rules are reinforced by the matching trapezoid tab and blank of guanine and cytosine and the matching round tab and blank of thymine and adenine.(Uracil and adenine in RNA) Students are therefore only able to correctly match base pairs.
I found that students better understood the fact that each strand of DNA serves as a template for a new strand during DNA replication after utilizing the kit.
The guidebook is very clearly written and the pictures clearly illustrate use of the kit.
If bases are not correctly pulled apart, the guidebook indicates that the laminate may separate. This has not been an issue with the set I have used for 3 years.