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DNA Structure and Replication

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

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

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DNA Structure and Replication
DNA segments capable of moving from one place in the genome to another is known as

introns
transposons
moving elements
retrovirus

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DNA Structure and Replication
What is the main damaging effect of UV radiation on DNA?

Single strand break
Depurination
Formation of thymine dimers
Dehydration

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DNA Structure and Replication
E.coli DNA polymerases II and III lack

partially 5' → 3' exonuclease activity
5' → 3' endonuclease activity
5' → 3' exonuclease activity
partially 5' → 3' endonuclease activity

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DNA Structure and Replication
Which will require a higher temperature to denature?

DNA with a high A-T content
RNA with a high G-C content
DNA with a high G-C content
RNA with a high A-T content

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DNA Structure and Replication
In DNA double helix, the two DNA chains are held together by

covalent bonds between the pair of bases
ionic bonds between the pair of bases
hydrogen bonds between the pair of bases
None of these

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