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Gene Expression

Explore how DNA, genes, chromosomes, and the genome relate at different scales, how transcription and translation build proteins, and how proteins — not DNA directly — produce observable traits.

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Already know what to work on? Jump straight to a reteach activity:

Misconception 1: Scale Conflation

Sort DNA, Gene, Chromosome, and Genome from smallest to largest to see they're nested structures, not synonyms.

Misconception 2: Sequence Confusion

Sort and sequence the steps of transcription and translation to see where one process ends and the other begins.

Misconception 3: Direct Trait Assumption

Use a Himalayan rabbit's temperature-sensitive coat to see that DNA codes for proteins, which produce traits — not DNA directly.

Protein Synthesis

A quick review of the central dogma — how DNA, RNA, and ribosomes work together through transcription and translation to build a protein — teaches each fact once, then tests it, and brings back anything you're still shaky on until it sticks.

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