Question

Which enzyme act as chromosomal breaks?

A

DNA polymerase

B

DNase

C

DNA ligase

D

DNA polymerase II

Hard

Solution

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Correct option is B)

The enzyme that cause chromosomal breaks are DNase. A deoxyribonuclease or DNase, is any enzyme that catalyzes the hydrolytic cleavage of phosphodiester linkages in the DNA backbone, thus degrading DNA. Deoxyribonucleases are one type of nuclease, a generic term for enzymes capable of hydrolising phosphodiester bonds that link nucleotides.

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