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DNA Structure and Replication

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

Histone H1
Histone H3
Histones H2A and H2B
Histone H4

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DNA Structure and Replication
DNA with a G-C content of 50% will melt at approximately

60°C
70 °C
100 °C
90 °C

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DNA Structure and Replication
If one cell has AT contents 40%, what will be the percentage of Guanine residue?

15%
60%
Guanine residue can not be calculated
30%

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DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

none of these
linking number
helix frequency
twisting number

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DNA Structure and Replication
After one replication in 15N, how many bands should be observed in a cesium chloride gradient?

A smear
Three
One
Two

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

Xenopus laevis
Saccharomyces cerevisiae
Strongylocentrotus purpuratus
Arabidopsis thaliana

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