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DNA Structure and Replication

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

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

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

DNA ligase
DNA polymerase
primase
helicase

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DNA Structure and Replication
Which will require a higher temperature to denature?

DNA with a high G-C content
RNA with a high G-C content
DNA with a high A-T content
RNA with a high A-T content

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DNA Structure and Replication
The chromosomal DNA complexes with

two types of histone as H1 and H4
three types of histone as H1, H2A and H4
four types of histone as H1, H2A, H3 and H4
five types of histone as H1, H2A, H2B, H3 and H4

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

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

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DNA Structure and Replication
What is the name given to the points at which a DNA helix is unwound and new strands develop?

Replication origins
Replication forks
Okazaki fragments
Leading strands

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