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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
helix frequency
none of these
twisting number

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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
Okazaki fragments occur during

polymerase reaction
synthesis
replication
transformation

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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
W.H. Bragg
R. Franklin
Leaderberg

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DNA Structure and Replication
Which enzyme catalyzes the elongation of DNA molecules?

Primase
Helicase
DNA ligase
DNA polymerase

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DNA Structure and Replication
The overall conclusion of the Hershey-Chase experiment was that

proteins and DNA were responsible for heredity
the ratio of Adenine to thymine was always the same
DNA was responsible for heredity
phage DNA was similar to bacterial DNA

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