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Biotechnology Engineering · Q20

Animal Biotechnology

Engineering and GATE · Biotechnology Engineering · question 20

Q20

Which of the following statements regarding the supercoiling of duplex DNA is correct?

A.
DNA replication promotes positive supercoiling downstream from the replication fork
Answer
B.
DNA polymerase III can replicate positively supercoiled duplex DNA
C.
DNA topoisomerases unwind duplex DNA into single-stranded DNA chains
D.
DNA topoisomerases unwind positively supercoiled duplex DNA without cutting the phosphosugar backbone

Answer: Option A

Solution

Answer: Option A
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