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1
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
The sequence that controls the copy number of the linked DNA in the vector, is termed
A
Recognition site
B
Ori site
C
Selectable marker
D
Palindromic sequence
2
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Match the organism with its use in biotechnology

(a) Bacillus thuringiensis (i) Cloning vector
(b) Thermus aquaticus (ii) Construction of first rDNA molecule
(c) Agrobacterium tumefaciens (iii) DNA polymerase
(d) Salmonella typhimurium (iv) Cry proteins

Select the correct option from the following:
A
(A) $$ \to $$ (iii), (B) $$ \to $$ (iv), (C) $$ \to $$ (i), (D) $$ \to $$ (ii)
B
(A) $$ \to $$ (ii), (B) $$ \to $$ (iv), (C) $$ \to $$ (iii), (D) $$ \to $$ (i)
C
(A) $$ \to $$ (iv), (B) $$ \to $$ (iii), (C) $$ \to $$ (i), (D) $$ \to $$ (ii)
D
(A) $$ \to $$ (iii), (B) $$ \to $$ (ii), (C) $$ \to $$ (iv), (D) $$ \to $$ (i)
3
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Choose the correct pair from the following
A
Exonucleases – Make cuts at specific positions within DNA
B
Ligases – Join the two DNA molecules
C
Polymerases – Break the DNA into fragments
D
Nucleases – Separate the two strands of DNA
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
DNA precipitation out of a mixture of bimolecules can be achieved by treatment with :
A
Methanol at room temperature
B
Chilled chloroform
C
Isopropanol
D
Chilled ethanol
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