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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?

None of these
H
S
B

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

helicase
primase
DNA ligase
DNA polymerase

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DNA Structure and Replication
Which of the following in DNA replication and transcription are common?

synthesis in the 5'-3' direction
None of these
incorporation of deoxynucleotides
utilization the same enzyme

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DNA Structure and Replication
One hypothesis of DNA replication suggested that the parental DNA molecules are broken into fragments. Both strands of DNA in each of the daughter molecules are made up of an assortment of parental and new DNA. This statement refers to which hypothesis?

Dispersive theory
Evolutionary theory
Semi-conservative theory
Conservative theory

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DNA Structure and Replication
For the DNA replication in eukaryotes, the cell cycle consists of

S, G2 and M phases
G1,S, G2 and M phases
G1, G2 and M phases
G2 and M phases

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DNA Structure and Replication
Which of the following is an active site on its single polypeptide chain for DNA Polymerase I?

3' → 5' exonuclease
All of these
5' → 3' polymerase
5' → 3' exonuclease

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