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DNA Structure and Replication

DNA Structure and Replication
DNA replication in eukaryotes occurs only in

S phase
G1 phase
M phase
G2 phase

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DNA Structure and Replication
How does ethidium bromide interact with DNA?

It intercalates between bases
It binds to phosphate
It does not interact
It binds to adenine

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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%?

Decreases
Increases
Can not be compared
Remains same

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DNA Structure and Replication
What does ligase do during replication of DNA?

Synthesizes the lagging strand
Joins nicks in DNA strands
Makes copies of mRNA from DNA
Digests mRNA when it is no longer needed

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DNA Structure and Replication
DNAs when charged, migrate in a gel towards the

will not migrate
negative pole
none of these
positive pole

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DNA Structure and Replication
A cesium chloride will separate DNA molecules by

absorption
density
resorption
adhesion

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