NEETBiologyMolecular Basis of InheritanceMCQ+4 / −1
Match the following genes of the Lac operon with their respective produces :
Select the correct option.
| (a) i gene | (i) -galactosidase |
|---|---|
| (b) z gene | (ii) Permease |
| (c) a gene | (iii) Repressor |
| (d) y gene | (iv) Transacetylase |
Select the correct option.
- A
(a) (b) (c) (d) (iii) (i) (iv) (ii) - B
(a) (b) (c) (d) (iii) (iv) (i) (ii) - C
(a) (b) (c) (d) (i) (iii) (ii) (iv) - D
(a) (b) (c) (d) (iii) (i) (ii) (iv)
View written solutionFree
Correct answer: A
The lac operon consists of :
One regulatory gene (i-gene), which codes for repressor.
Three structural genes (z, y and a).
1. z gene : Codes for β-galactosidase, which hydrolyze lactose to galactose and glucose.
2. y gene : Codes for Permease, which increases the permeability of the cell to lactose.
3. a-gene : Codes for a transacetylase.
More from Molecular Basis of Inheritance
- Under which of the following conditions will there be no change in the reading frame of following mRNA? 5' AACAGCGGUGCUAUU 3'2019 · MCQ
- Select the correct match :2018 · MCQ
- The experimental proof for semi-conservative replication of DNA was first shown in a2018 · MCQ
- Select the correct statement :2018 · MCQ
- Select the correct match :2018 · MCQ
- Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as2018 · MCQ
- All of the following are part of an operon except2018 · MCQ
- AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA?2018 · MCQ