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DNA Structure and Replication

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

dTTP
all of these
dGTP and dCTP
dATP

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DNA Structure and Replication
What is the IUPAC code for an A, C, T ambiguity in a nucleic acid sequence?

S
None of these
H
B

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

antiparallel
mutational
semiconservative
discontinuous

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DNA Structure and Replication
DNA helicase is used to

break a phosphodiester bond in DNA strand
unwind the double helix
interact the double helix closely
None of these

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DNA Structure and Replication
One hypothesis of DNA replication suggested that the parental DNA molecules are broken into fragments. Both strands of DNA in each of the daughter molecules are made up of an assortment of parental and new DNA. This statement refers to which hypothesis?

Evolutionary theory
Conservative theory
Semi-conservative theory
Dispersive theory

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DNA Structure and Replication
Which of the following is not a structural motif in DNA binding proteins?

bZIP
zinc finger
TFIID
helix-turn-helix

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