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DNA Structure and Replication

DNA Structure and Replication
DNA can be sequenced by the

chain termination procedure
physical method
both (a) and (b)
chemical method

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DNA Structure and Replication
What bands will be observed in a cesium chloride gradient after two rounds of replication?

One medium and one heavy band
One medium band
One light, one medium and one heavy band
One light and one medium band

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DNA Structure and Replication
Overwinding or overtightening of DNA during replication is caused and removed by

DNAb, gyrase
DNAa, gyrase
DNAb, DNA polymerase
Single stranded protein, DNAa

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DNA Structure and Replication
The packing ratio of nucleosomes is about

8
6
7
9

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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
Which of the following is not a structural motif in DNA binding proteins?

zinc finger
TFIID
bZIP
helix-turn-helix

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