NEET Solved Paper 2018 Question 68
Question: All of the following are part of an operon except [NEET - 2018]
Options:
A) an enhancer
B) structural genes
C) an operator
D) a promoter
Show Answer
Answer:
Correct Answer: A
Solution:
- Structural genes: These are the genes that are co-transcribed to produce mRNA, which then translates into proteins.
- Operator: A segment of DNA to which a repressor binds, thereby regulating the expression of the structural genes.
- Promoter: A region of DNA where RNA polymerase binds to initiate transcription of the structural genes.
An enhancer is a DNA sequence that can increase the efficiency of transcription but is not considered a part of the operon itself. Enhancers can be located far from the genes they regulate and are not directly involved in the operon’s basic structure and function.
BETA
