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DNA Structure and Replication

DNA Structure and Replication
Klenow fragment without free nucleotides exhibits

exonuclease activity
no activity
nickase activity
endonuclease 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?

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

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DNA Structure and Replication
What is the range of melting point temperatures (Tm) for most DNA molecules?

80 to l00°C
50 to 60°C
60 to 80°C
70 to 90°C

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DNA Structure and Replication
In DNA replication, one new strand is synthesized complementary to an old (parent) strand and is referred as

discontinuous
semiconservative
antiparallel
mutational

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DNA Structure and Replication
What does ligase do during replication of DNA?

Joins nicks in DNA strands
Synthesizes the lagging strand
Makes copies of mRNA from DNA
Digests mRNA when it is no longer needed

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DNA Structure and Replication
The DNA is negatively super coiled, complexes to histone,

HU
All of these
H-NS
HSP-1

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MORE MCQ ON DNA Structure and Replication

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