NEET UG · Biology · Molecular Basis of Inheritance
lac z, y and a Gene Products
NEET asked lac z, y and a Gene Products 3 times, in 2019, 2023 and 2024: 3 of the 1,875 questions in the 10 papers from 2017–2026. It belongs to Gene Regulation and the lac Operon, in Molecular Basis of Inheritance (Biology). The longest wait between two papers asking it was 4 years.
Updated 2026-10-08
- Times asked
- 3
- in 2017–2026
- Papers
- 3
- of 10
- First asked
- 2019
- last in 2024
- Chance next paper
- 6%
- calibrated historical rate
Questions on this idea, by paper
2017–2026. 2019, 2023 and 2024.
How NEET framed it
Match the lists is the usual form. Skill tested: recall.
- Match list on lac operon genes
- Match list on lac operon genes and products
Chance asked next paper 6%
Every question
All 3 questions
From the official NEET UG papers, newest first. Open one for the full question, the options and the official answer.
- 2024 Q101The lactose present in the growth medium of bacteria is transported to the cell by the action of:One-line MCQ · Medium
- 2023 Q151Match List I with List II. List I | List II A. Gene 'a' | I. β-galactosidase B. Gene 'y' | II. Transacetylase C. Gene 'i' | III. Permease…Match the lists · Easy
- 2019 Q166Match the following genes of the Lac operon with their respective products : (a) i gene | (i) β-galactosidase (b) z gene | (ii) Permease…Match the lists · Medium
Same topic
Other ideas in Gene Regulation and the lac Operon
Gene Regulation and the lac Operon has 4 ideas NEET has asked; 2 of them came up in more than one question.
- Inducer and Repressor Control2× · 2026
- Jacob and Monod's Operon Conceptonce · 2018
- Structure of the lac Operononce · 2018