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DNA Structure and Replication

DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

linking number
helix frequency
twisting number
none of these

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DNA Structure and Replication
What is the name given to the points at which a DNA helix is unwound and new strands develop?

Replication origins
Leading strands
Okazaki fragments
Replication forks

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DNA Structure and Replication
Which of the following enzyme adds complementary bases during replication?

Polymerase
Replicase
Synthesase
Helicase

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DNA Structure and Replication
Okazaki fragments occur during

polymerase reaction
transformation
replication
synthesis

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DNA Structure and Replication
Which polymerase is active in DNA repairing

Polymerase III
none of these
Polymerase I
Polymerase II

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DNA Structure and Replication
What bands will be observed in a cesium chloride gradient after two rounds of replication?

One medium and one heavy band
One light and one medium band
One medium band
One light, one medium and one heavy band

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