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DNA Structure and Replication

DNA Structure and Replication
Deoxyribonucleoside triphosphates, being need in the chain termination methods are

dGTP and dCTP
dATP
all of these
dTTP

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

B
None of these
S
H

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DNA Structure and Replication
An RNA primer is synthesized by

DNA topoisomerase
primase
DNA helicases
ligase

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DNA Structure and Replication
The RNA primers used to initiate replication in E. coli

are removed by helicase + ATP
are removed by Pol I
result in Okazaki fragments on leading strand
are joined together by DNA ligase

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DNA Structure and Replication
Okazaki fragments occur during

polymerase reaction
replication
synthesis
transformation

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

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

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