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DNA Structure and Replication

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

dispersive replication
semi-conservative replication
conservative replication
Cri du Chat

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DNA Structure and Replication
In a cesium chloride gradient, DNA labeled with 15N and centrifuged will form a band

all of these
above DNA containing 14N
with 14N-containing DNA
below DNA containing 14N

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

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

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DNA Structure and Replication
When DNA polymerase is in contact with guanine in the parental strand, what does it add to the growing daughter strand?

Cytosine
Phosphate
Uracil
Guanine

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

None of these
S
H
B

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DNA Structure and Replication
DNA with a G-C content of 50% will melt at approximately

100 °C
70 °C
90 °C
60°C

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