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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

antiparallel
discontinuous
mutational
semiconservative

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

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

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DNA Structure and Replication
The role of primase is to

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

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

dATP
dTTP
dGTP and dCTP
all of these

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

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

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