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DNA Structure and Replication

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

Cri du Chat
dispersive replication
conservative replication
semi-conservative replication

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DNA Structure and Replication
The 5' and 3' numbers are related to the

carbon number in sugar
the base pair rule
length of the DNA strand
the number of phosphates

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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
below DNA containing 14N
above DNA containing 14N
with 14N-containing DNA

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

Dehydration
Single strand break
Depurination
Formation of thymine dimers

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

100 °C
60°C
70 °C
90 °C

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

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

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