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DNA Structure and Replication

DNA Structure and Replication
The nucleosome consists of histone

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

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DNA Structure and Replication
Who's X-ray work aided Watson and Crick in their discovery of the double helix?

L. Pauling
W.H. Bragg
R. Franklin
Leaderberg

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DNA Structure and Replication
In DNA, guanine pairs with

Thymine
Adenine
Cytosine
Uracil

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DNA Structure and Replication
What is the range of melting point temperatures (Tm) for most DNA molecules?

50 to 60°C
60 to 80°C
80 to l00°C
70 to 90°C

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DNA Structure and Replication
In the study of one experiment it was found that the value of Tm for DNA is = 40° C. If the cell has 20% GC at the above Tm, then what will be value of 'Tm' if the GC% increases to 60%?

Remains same
Increases
Decreases
Can not be compared

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DNA Structure and Replication
DNA replication results in

one new molecule of RNA
one new DNA molecules 1 old molecule
two completely new DNA molecules
two DNA molecules such that each one contains a strand of the original

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