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DNA Structure and Replication

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

H
B
S
None of these

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DNA Structure and Replication
Enzymes, responsible for unraveling short segments of DNA is

primase
helicase
DNA ligase
DNA polymerase

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DNA Structure and Replication
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

strandase
DNA polymerase
none of these
helicase

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DNA Structure and Replication
The overall conclusion of the Hershey-Chase experiment was that

the ratio of Adenine to thymine was always the same
phage DNA was similar to bacterial DNA
proteins and DNA were responsible for heredity
DNA was responsible for heredity

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DNA Structure and Replication
After one replication in 15N, how many bands should be observed in a cesium chloride gradient?

Three
Two
One
A smear

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DNA Structure and Replication
Okazaki fragments occur during

replication
polymerase reaction
transformation
synthesis

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