Q. No.The following diagram showing restriction sites in E.coli cloning vector pBR322. Find the role of 'X' and 'Y' genes :
| 1. | The gene 'X' is responsible for controlling the copy number of the linked DNA and 'Y' for protein involved in the replication of Plasmid. |
| 2. | The gene 'X' is 'for protein involved in replication of Plasmid and 'Y' for resistance to antibiotics. |
| 3. | Gene 'X' is responsible for recognition sites and 'Y' is responsible for antibiotic resistance. |
| 4. | The gene 'X' is responsible for resistance to antibiotics and 'Y' for protein involved in the replication of Plasmid. |
Subtopic: Cloning Vector |
75%
From NCERT
NEET - 2024
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Which of the following is not a selectable marker of cloning vectors?
1. Ampicillin
2. Metformin
3. Chloramphenicol
4. Tetracycline
1. Ampicillin
2. Metformin
3. Chloramphenicol
4. Tetracycline
Subtopic: Cloning Vector |
89%
From NCERT
NEET - 2024
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Match List-I with List-II
Choose the correct answer from the options given below:
1. A-III, B-IV, C-I , D-II
2. A-III, B-I, C-IV, D-II
3. A-IV, B-III, C-II , D-I
4. A-II, B-IV, C-I, D-III
| List-I | List-II | ||
| A. | Ampicillin | I. | Restriction sites |
| B. | Ori | II. | Blue/White screening |
| C. | Multiple cloning sites | III. | Selectable marker |
| D. | \(\beta\) galactosidase gene | IV. | Sequence from where replication starts |
1. A-III, B-IV, C-I , D-II
2. A-III, B-I, C-IV, D-II
3. A-IV, B-III, C-II , D-I
4. A-II, B-IV, C-I, D-III
Subtopic: Cloning Vector |
85%
From NCERT
NEET - 2024
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Select the restriction endonuclease enzymes whose restriction sites are present for the tetracycline resistance (tetR) gene in the pBR322 cloning vector.
1. Bam HI and Sal I
2. Sal I and Pst I
3. Pst I and Pvu I
4. Pvu I and Bam HI
1. Bam HI and Sal I
2. Sal I and Pst I
3. Pst I and Pvu I
4. Pvu I and Bam HI
Subtopic: Cloning Vector |
85%
From NCERT
NEET - 2024
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Ligation of foreign DNA at which of the following site will result in loss of tetracycline resistance of pBR322?
| 1. | PsT I | 2. | Pvu I |
| 3. | EcoR I | 4. | BamH I |
Subtopic: Cloning Vector |
85%
From NCERT
NEET - 2023
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Match List-I with List-II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (A) | Kanamycin | (I) | Delivers genes into animal cells |
| (B) | ClaI | (II) | Selectable marker |
| (C) | Disarmed retroviruses | (III) | Restriction site |
| (D) | Kanamycin Rgene | (IV) | Antibiotic resistance |
Choose the correct answer from the options given below:
| Options: | (A) | (B) | (C) | (D) |
| 1. | (II) | (III) | (I) | (IV) |
| 2. | (III) | (I) | (IV) | (II) |
| 3. | (IV) | (III) | (I) | (II) |
| 4. | (II) | (IV) | (I) | (III) |
Subtopic: Cloning Vector |
55%
From NCERT
NEET - 2023
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Which of the following is not a desirable feature of a cloning vector?
1. Presence of two or more recognition sites
2. Presence of origin of replication
3. Presence of a marker gene
4. Presence of single restriction enzyme site
1. Presence of two or more recognition sites
2. Presence of origin of replication
3. Presence of a marker gene
4. Presence of single restriction enzyme site
Subtopic: Cloning Vector |
75%
From NCERT
NEET - 2022
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Identify the properties of a good vector used in rDNA technology:
| (a) | It should have origin of replication supporting a high copy number |
| (b) | It should have preferably more than '2' recognition sites |
| (c) | The restriction sites in vector should be in the antibiotic- resistant genes |
| (d) | It should have suitable marker genes |
| (e) | It should be easy to isolate and purify |
Choose the most appropriate answer from the options given below:
1. (a), (c) and (e) only2. (c), (d) and (e) only
3. (a), (b) and (c) only
4. (a), (c), (d) and (e) only
Subtopic: Cloning Vector | Tools |
87%
From NCERT
NEET - 2022
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Pathogenic bacteria gain resistance to antibiotics due to changes in their:
1. Cosmids
2. Plasmids
3. Nucleus
4. Nucleoid
1. Cosmids
2. Plasmids
3. Nucleus
4. Nucleoid
Subtopic: Cloning Vector |
85%
From NCERT
NEET - 2022
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Plasmid pBR322 has a PstI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for -galactoside production and the recombinant plasmid is inserted in an E.coli strain,
| 1. | it will lead to the lysis of host cells. |
| 2. | it will be able to produce a novel protein with dual abilities. |
| 3. | it will not be able to confer ampicillin resistance to the host cell. |
| 4. | the transformed cells will have the ability to resist ampicillin as well as produce β -galactoside. |
Subtopic: Cloning Vector |
59%
From NCERT
NEET - 2021
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