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DNA Structure and Replication

DNA Structure and Replication
The nicks or gaps between Okazaki fragments are eventually sealed by

RNA ligase
polymerase
gyrase
DNA ligase

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DNA Structure and Replication
In an agarose gel, DNA is moving from

left to right
A to B
cathode to anode
anode to cathode

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DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

helix frequency
linking number
twisting number
none of these

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

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

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DNA Structure and Replication
In sperm heads, DNA is particularly highly condensed and the histones are replaced with small basic protein called

protamines
pyrimidines
All of these
purines

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

H
None of these
B
S

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