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DNA Structure and Replication

DNA Structure and Replication
DNA replication in eukaryotes occurs only in

G2 phase
S phase
M phase
G1 phase

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DNA Structure and Replication
The DNA is negatively super coiled, complexes to histone,

HSP-1
H-NS
All of these
HU

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

dispersive replication
semi-conservative replication
Cri du Chat
conservative replication

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DNA Structure and Replication
The nicks or gaps between Okazaki fragments are eventually sealed by

polymerase
DNA ligase
gyrase
RNA ligase

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DNA Structure and Replication
DNA gyrase in E. coli

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

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

70 °C
90 °C
100 °C
60°C

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MORE MCQ ON DNA Structure and Replication

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