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DNA Structure and Replication

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

linking number
twisting number
helix frequency
none of these

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DNA Structure and Replication
Klenow fragment without free nucleotides exhibits

exonuclease activity
endonuclease activity
no activity
nickase activity

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DNA Structure and Replication
Who's X-ray work aided Watson and Crick in their discovery of the double helix?

L. Pauling
Leaderberg
R. Franklin
W.H. Bragg

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

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

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

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

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DNA Structure and Replication
DNA replication in eukaryotes occurs only in

M phase
S phase
G2 phase
G1 phase

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