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DNA Structure and Replication

DNA Structure and Replication
The packing ratio of nucleosomes is about

9
8
6
7

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DNA Structure and Replication
Enzymes, responsible for unraveling short segments of DNA is

DNA polymerase
primase
helicase
DNA ligase

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DNA Structure and Replication
What does ligase do during replication of DNA?

Synthesizes the lagging strand
Makes copies of mRNA from DNA
Digests mRNA when it is no longer needed
Joins nicks in DNA strands

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DNA Structure and Replication
Which histone(s) are associated with the linker DNA of a nucleosome?

Histone H4
Histone H1
Histones H2A and H2B
Histone H3

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DNA Structure and Replication
Telomeres are usually rich in which nucleotide?

Cytosine
Adenine
Guanine
Thymine

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DNA Structure and Replication
Which of the following species lack a 'classical' histone H1?

Xenopus laevis
Saccharomyces cerevisiae
Arabidopsis thaliana
Strongylocentrotus purpuratus

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