Unit 6 · Exam weight 12–16%

Gene Expression & Regulation

DNA → RNA → protein, mutations, regulation, and biotechnology.

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Lessons

DNA & RNA Structure / Replication

Semiconservative replication preserves the genome.

Transcription & Translation

RNA polymerase reads DNA; ribosomes build proteins.

Gene Regulation

Operons in prokaryotes; transcription factors and epigenetics in eukaryotes.

Mutations & Biotechnology

Sequence changes and modern tools.

Featured diagram

DNA replication fork with helicase, polymerases, and Okazaki fragments

Practice MCQs for this unit Practice FRQs