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DNA Structure and Replication

DNA Structure and Replication
DNA can be sequenced by the

both (a) and (b)
chemical method
physical method
chain termination procedure

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DNA Structure and Replication
In a cesium chloride gradient, DNA labeled with 15N and centrifuged will form a band

below DNA containing 14N
above DNA containing 14N
with 14N-containing DNA
all of these

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

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

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DNA Structure and Replication
Which of the following species lack a 'classical' histone H1?

Xenopus laevis
Strongylocentrotus purpuratus
Saccharomyces cerevisiae
Arabidopsis thaliana

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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
R. Franklin
Leaderberg
W.H. Bragg

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DNA Structure and Replication
What is the approximate percentage of repetitive DNA sequences in human DNA?

10 to 20%
20 to 30%
30 to 40%
40 to 50%

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