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DNA Structure and Replication

DNA Structure and Replication
The nucleosome consists of histone

None of these
hexamer and 146 bp of DNA
octamer and 146 bp of DNA
tetramer and 146 bp of DNA

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DNA Structure and Replication
In a cesium chloride gradient, DNA labeled with 15N and centrifuged will form a band

all of these
above DNA containing 14N
below DNA containing 14N
with 14N-containing DNA

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DNA Structure and Replication
The replication of a linear DNA molecule in a eukaryotic chromosome creates a problem which is reported to be sorted out by

None of these
using enzyme called telomerase
using RNA as a template
shortening of the double stranded replicated portion

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DNA Structure and Replication
Which is the largest among the followings?

Nitrogenous base
Phosphate
Nucleotide
Carbon

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

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DNA Structure and Replication
Which of these drugs bind to DNA and cuts it, producing hydroxyl radicals?

Tunicamycin
All of these
Erythromycin
Bleomycin

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