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DNA Structure and Replication

DNA Structure and Replication
DNA replication in eukaryotes occurs only in

S phase
G2 phase
M phase
G1 phase

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

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

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DNA Structure and Replication
DNA helicase is used to

None of these
unwind the double helix
interact the double helix closely
break a phosphodiester bond in DNA strand

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DNA Structure and Replication
For the DNA replication in eukaryotes, the cell cycle consists of

G2 and M phases
G1, G2 and M phases
G1,S, G2 and M phases
S, G2 and M phases

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DNA Structure and Replication
Which of the following is an active site on its single polypeptide chain for DNA Polymerase I?

3' → 5' exonuclease
5' → 3' exonuclease
All of these
5' → 3' polymerase

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DNA Structure and Replication
Telomeres are usually rich in which nucleotide?

Cytosine
Adenine
Guanine
Thymine

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