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DNA Structure and Replication

DNA Structure and Replication
What is the IUPAC code for an A, C, T ambiguity in a nucleic acid sequence?

B
H
S
None of these

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DNA Structure and Replication
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

strandase
DNA polymerase
none of these
helicase

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

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

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DNA Structure and Replication
Messelsen and Stahl model of replication was called

conservative replication
semi-conservative replication
dispersive replication
Cri du Chat

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

TFIID
zinc finger
bZIP
helix-turn-helix

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DNA Structure and Replication
What is the only common methylation in the DNA of eukaryotes?

Adenosine in GpA dinucleotides
Guanosine in ApGpA trinucleotides
None of these
Cytosine in CpG dinucleotides

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