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DNA Structure and Replication

DNA Structure and Replication
What is the exact name of the classical Watson-Crick double helix DNA?

B-DNA
Z-DNA
A-DNA
X-DNA

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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%?

Increases
Can not be compared
Remains same
Decreases

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DNA Structure and Replication
The nicks or gaps between Okazaki fragments are eventually sealed by

gyrase
DNA ligase
RNA ligase
polymerase

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DNA Structure and Replication
What is the main damaging effect of UV radiation on DNA?

Depurination
Formation of thymine dimers
Dehydration
Single strand break

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DNA Structure and Replication
In an agarose gel, DNA is moving from

anode to cathode
A to B
left to right
cathode to anode

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DNA Structure and Replication
Which of the following is not a structural motif in DNA binding proteins?

bZIP
zinc finger
TFIID
helix-turn-helix

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