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DNA Structure and Replication

DNA Structure and Replication
In sperm heads, DNA is particularly highly condensed and the histones are replaced with small basic protein called

purines
protamines
pyrimidines
All of these

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DNA Structure and Replication
The nucleosome consists of histone

None of these
octamer and 146 bp of DNA
hexamer and 146 bp of DNA
tetramer and 146 bp of DNA

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DNA Structure and Replication
An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called

reverse transcriptase
transposase
helicase
restriction endonuclease

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DNA Structure and Replication
Messelsen and Stahl model of replication was called

Cri du Chat
semi-conservative replication
dispersive replication
conservative replication

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DNA Structure and Replication
Which of the following is an active site on its single polypeptide chain for DNA Polymerase I?

5' → 3' polymerase
3' → 5' exonuclease
All of these
5' → 3' exonuclease

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DNA Structure and Replication
Enzyme, responsible for proofreading base pairing is

Telomerase
DNA ligase
Primase
DNA polymerase

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