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1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Purines found both in DNA and RNA are:
A
Guanine and cytosine
B
Cytosine and thymine
C
Adenine and thymine
D
Adenine and guanine
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Expressed Sequence Tags (ESTs) refers to :
A
DNA polymorphism
B
Novel DNA sequences
C
Genes expressed as RNA
D
Polypeptide expression
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Match the following genes of the Lac operon with their respective produces :

(a) i gene (i) $$\beta $$-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)
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Under which of the following conditions will there be no change in the reading frame of following mRNA?

5' AACAGCGGUGCUAUU 3'
A
Insertion of A and G at 4th and 5th positions respectively
B
Deletion of GGU from 7th, 8th and 9th positions
C
Insertion of G at 5th positions
D
Deletion of G from 5th positions
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