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

Which one of the following statement is not true regarding gel electrophoresis technique?

A
The process of extraction of separated DNA strands from gel is called elution.
B
The separated DNA fragments are stained by using ethidium bromide.
C
The presence of chromogenic substrate gives blue coloured DNA bands on the gel.
D
Bright orange coloured bands of DNA can be observed in the gel when exposed to UV light.
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

Given below are two statements:

Statement I : Restriction endonucleases recognise specific sequence to cut DNA known as palindromic nucleotide sequence.

Statement II : Restriction endonucleases cut the DNA strand a little away from the centre of the palindromic site.

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

A
Both Statement I and Statement II are correct
B
Both Statement I and Statement II are incorrect
C
Statement I is correct but Statement II is incorrect
D
Statement I is incorrect but Statement II is correct
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

Which of the following is not a desirable feature of a cloning vector?

A
Presence of origin of replication
B
Presence of a marker gene
C
Presence of single restriction enzyme site
D
Presence of two or more recognition sites
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
During the purification process for recombinant DNA technology, addition of chilled ethanol precipitates out :
A
Polysaccharides
B
RNA
C
DNA
D
Histones
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