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DNA Structure and Replication

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

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

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DNA Structure and Replication
Overwinding or overtightening of DNA during replication is caused and removed by

DNAb, DNA polymerase
Single stranded protein, DNAa
DNAb, gyrase
DNAa, gyrase

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DNA Structure and Replication
In DNA, guanine pairs with

Thymine
Cytosine
Adenine
Uracil

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DNA Structure and Replication
The packing ratio of nucleosomes is about

7
6
9
8

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DNA Structure and Replication
Klenow fragment without free nucleotides exhibits

exonuclease activity
no activity
nickase activity
endonuclease activity

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DNA Structure and Replication
There is a single origin for DNA replication in bacteria. How many origins of replication are found in the much larger genomes of eukaryotes such as mammals?

About 100
Thousands and tens of thousands
none of these
One

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