Biology 251 - Genetics » Spring 2021 » Topic 8.1 Quiz
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Question #1
In the experiment to study DNA replication performed by Meselson and Stahl, DNA was labeled with a radioisotope on:
A.
phosophate in the phosphodiester bond.
B.
oxygens in all parts of the nucleotide.
C.
sulfur in the phosphodiester bond.
D.
nitrogen in the bases.
E.
carbon in the deoxyribose.
Question #2
In the Meselson-Stahl Experiment, incorporation of different isotopes before and after DNA replication could be distinguished by:
A.
density gradient centrifugation.
B.
gel electrophoresis.
C.
affinity chromatography.
D.
an autoradiogram.
Question #3
A model of DNA replication that would keep the original DNA strands together after a round of DNA synthesis is called:
A.
continuous.
B.
semiconservative.
C.
dispersive.
D.
conservative.
Question #4
In the Meselson-Stahl Experiment, it was not possible to distinguish dispersive and semiconservative replication after only one round of replication.
A.
False
B.
True
Question #5
In the Meselson-Stahl Experiment, it was not possible to distinguish convervative and semiconservative replication after only one round of replication.
A.
False
B.
True
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