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DNA Structure and Replication

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

HSP-1
HU
All of these
H-NS

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

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

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DNA Structure and Replication
Without telomerase, what would happen to the ends of chromosomes after each round of replication?

None of these
Nothing would happen
Chromosomes would become progressively shorter
Chromosomes would get longer

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DNA Structure and Replication
In the study of one experiment it was found that the value of Tm for DNA is = 40° C. If the cell has 20% GC at the above Tm, then what will be value of 'Tm' if the GC% increases to 60%?

Increases
Remains same
Can not be compared
Decreases

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DNA Structure and Replication
What is the IUPAC code for an A, C, T ambiguity in a nucleic acid sequence?

B
S
None of these
H

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DNA Structure and Replication
Okazaki fragments occur during

replication
synthesis
transformation
polymerase reaction

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