alleryThe lac operon is regulated by the lac repressor binding to the:
APromoter
BTerminator
CStructural gene z
DOperator region (adjacent to the promoter)
Answer & Solution
Correct answer: D. Operator region (adjacent to the promoter)
The **lac repressor** binds the **operator** (adjacent to the promoter).
When bound, it physically blocks RNA polymerase from transcribing the structural genes.
When inactivated by lactose, transcription proceeds.
Keep practising Unit 7A: Genetic Diversity and Mendelian Transmission in Populations
Browse all Unit 7A: Genetic Diversity and Mendelian Transmission in Populations questions for NEET UG, or explore more Environmental Science topics.
Related questions
Linkage map distance of 1 cM (centimorgan) corresponds to:4 O'clock plant flower color shows incomplete dominance: RR (red) × rr (white) → Rr (pink)Pleiotropy refers to:Approximately how many genes does the human genome contain (per HGP)?In eukaryotes, exons are:According to HGP findings, what percentage of the human genome codes for proteins?The lac operon (Jacob & Monod) consists of which structural genes?During translation, the activation of an amino acid and its linkage to its cognate tRNA is