Biology A (Salters-Nuffield) A-Level
lac operon
What lac operon means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of lac operon
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Reference: Pearson Edexcel
A named example of gene control in prokaryotes in which lactose binds the repressor protein, freeing the operator so RNA polymerase transcribes the structural genes.
Topics that use lac operon
- Topic 3: Voice of the Genome (Pearson Edexcel A-Level)
Related terms
- Acrosome
- Acrosome reaction
- Cell cycle and interphase
- Continuous variation and normal distribution
- Cortical reaction
- Differential gene expression
- DNA methylation
- DNA replication and sister chromatids
Using lac operon in the exam
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