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

  1. Tap bases to build the partner strand of a DNA ladder.
  2. Type your own DNA and watch the cell read it three letters at a time.
  3. Compare a normal and a changed gene and find the mutation.
  4. 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 →

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