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DNA STRUCTURE AND REPLICATION

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

discontinuous
antiparallel
semiconservative
mutational

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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
all of these
with 14N-containing DNA

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DNA Structure and Replication
The role of primase is to

proofread base pairing
cleave and unwinds short sections of DNA ahead of the replication fork
dismantle RNA primer
synthesize an RNA primer to begin the elongation process

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DNA Structure and Replication
Deoxyribonucleoside triphosphates, being need in the chain termination methods are

dGTP and dCTP
all of these
dATP
dTTP

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

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

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