Build a DNA Molecule
Classes 8–12 · about 6 minutes · free, no sign-up
What you will learn
Explain complementary base pairing, how a sequence of codons codes for a chain of amino acids, what a mutation is, and that almost every cell carries the same DNA.
How to play
- Tap bases to build the partner strand of a DNA ladder.
- Type your own DNA and watch the cell read it three letters at a time.
- Compare a normal and a changed gene and find the mutation.
- Finish three challenges, then experiment with stop codons in free play.
Go deeper
Notes, practice questions and tests for the same topic:
Class 10 Science: Heredity NCERT chapters → Class 12 Biology: Molecular Basis of Inheritance NCERT chapters →More in Body & Life Lab

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Play →Free forever, no account needed. No ads for students and no tracking. Anything you type stays on your device.