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DNA Structure and Replication

DNA Structure and Replication
Which DNA polymerase removes RNA primers in DNA synthesis?

Polymerase II
none of these
Polymerase I
Polymerase III

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

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

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DNA Structure and Replication
During conventional transformation experiments E. coli cells and plasmid DNA interacts in an environment of

low temperature and Ca++
high temperature and Ca++
low temperature and Mg++
high temperature and Mg++

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

semi-conservative replication
Cri du Chat
dispersive replication
conservative replication

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DNA Structure and Replication
Which will require a higher temperature to denature?

DNA with a high G-C content
DNA with a high A-T content
RNA with a high G-C content
RNA with a high A-T content

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DNA Structure and Replication
DNA gyrase in E. coli

adds positive supercoils to chromosomal DNA
performs the same function as helicase in eukaryotes
can be inhibited with antibiotics
is required only at the oriC site

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