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DNA Structure and Replication

DNA Structure and Replication
An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called

transposase
reverse transcriptase
restriction endonuclease
helicase

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DNA Structure and Replication
DNA polymerases I also has

5'-3' endonuclease activity
5'-3' exonuclease activity
3'-5'exonuclease activity
both (a) and (b)

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

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

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DNA Structure and Replication
Who's X-ray work aided Watson and Crick in their discovery of the double helix?

Leaderberg
L. Pauling
R. Franklin
W.H. Bragg

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DNA Structure and Replication
First evident that DNA is genetic material comes from the experiment of Griffith is

transduction
replication
transformation
translation

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DNA Structure and Replication
After one replication in 15N, how many bands should be observed in a cesium chloride gradient?

Two
A smear
Three
One

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