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1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

Pathogenic bacteria gain resistance to antibiotics due to changes in their :

A
Nucleoid
B
Cosmids
C
Plasmids
D
Nucleus
2
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

Which of the following methods is not commonly used for introducing foreign DNA into the plant cell?

A
Bacteriophages
B
Agrobacterium mediated transformation
C
Gene gun
D
‘Disarmed pathogen’ vectors
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

Refer to the following statements for agarose-gel electrophoresis:

(a) Agarose is a natural polymer obtained from sea-weed.

(b) The separation of DNA molecules in agarose-gel electrophoresis depends on the size of DNA.

(c) The DNA migrates from negatively-charged electrode to the positively-charged electrode

(d) The DNA migrates from positively-charged electrode to the negatively-charged electrode.

Choose the most appropriate answer from the options given below :

A
(b), (c) and (d) only
B
(a) and (b) only
C
(a), (b) and (c) only
D
(a), (b) and (d) only
4
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Polymerase chain reaction is used in DNA amplification.

Reason (R) : The ampicillin resistant gene is used as a selectable marker to check transformation.

In the light of the above statements, choose the correct answer from the options given below :

A
Both (A) and (R) are correct and (R) is the correct explanation of (A)
B
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
C
(A) is correct but (R) is not correct
D
(A) is not correct but (R) is correct
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