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DNA Structure and Replication

DNA Structure and Replication
Enzymes, responsible for unraveling short segments of DNA is

DNA polymerase
DNA ligase
primase
helicase

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DNA Structure and Replication
Proteins involved in opening a replication bubble are

DNA helicases
DNA topoisomerase
single stranded binding proteins
ligase

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DNA Structure and Replication
In the study of one experiment it was found that the value of Tm for DNA is = 40° C. If the cell has 20% GC at the above Tm, then what will be value of 'Tm' if the GC% increases to 60%?

Remains same
Decreases
Increases
Can not be compared

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DNA Structure and Replication
Each replication bubbles consists of

4 replication forks
3 replication forks
2 replication forks
1 replication forks

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DNA Structure and Replication
Which DNA polymerase removes RNA primers in DNA synthesis?

none of these
Polymerase III
Polymerase I
Polymerase II

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DNA Structure and Replication
What is the approximate percentage of repetitive DNA sequences in human DNA?

30 to 40%
10 to 20%
20 to 30%
40 to 50%

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