NEET 2024
- Exam
- NEET
- Year
- 2024
- Subject
- Zoology
- Chapter
- Molecular Basis of Inheritance
NEET 2024 · Zoology · Molecular Basis of Inheritance
Given below are two statements : Statement I: In the lac operon,...
Given below are two statements :
Statement I: In the lac operon, the z gene codes for beta-galactosidase which is primarily responsible for the hydrolysis of lactose into galactose and glucose.
Statement II: In addition to lactose, glucose or galactose can also induce lac operon.
In the light of the above statements, choose the correct answer from the options given below :
Options
- AStatement I is true but Statement II is false
- BStatement I is false but Statement II is true
- CBoth Statement I and Statement II are true
- DBoth Statement I and Statement II are false
Correct answer
A. Statement I is true but Statement II is false
Step-by-step solution
In the lac operon the - gene codes for -galactosidase which is primarily responsible for the hydrolysis of lactose into its monomeric units, galactose and glucose.
Glucose and galactose cannot act as the inducers of lac operon. Rather, lactose or allolactose act as inducers of lac operon.