Biochemistry - DNA Structure and Replication - Discussion

Discussion Forum : DNA Structure and Replication - Section 2 (Q.No. 19)
19.
DNA polymerases I also has
5'-3' exonuclease activity
3'-5'exonuclease activity
both (a) and (b)
5'-3' endonuclease activity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
5 comments Page 1 of 1.

Chaya said:   4 years ago
The answer should be A. Because 3-5 exonuclease activity is shown by all polymerases but 5-3 is shown only by dna pol 1.

Laboni said:   5 years ago
The Correct answer is option C. DNA polymerase 1 has both exonuclease activity.
(2)

Raj said:   8 years ago
Polymerase 1 2 3 have 3'->5' exonuclease activity, specifically pol 1 has 5'->3' exonuclease activity helps to the removal of THYMINE dimers caused due to the UV radiation.
(1)

S. k. verma said:   9 years ago
Polymerase1 has both activities.
(1)

UIowa said:   1 decade ago
Pol I has both exonuclease activities. Pol III only has 3'-5'.

5'-3' is used for removing primer.
(1)

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