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DNA Structure and Replication

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

Leading strands
Okazaki fragments
Replication forks
Replication origins

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DNA Structure and Replication
In DNA double helix, the two DNA chains are held together by

ionic bonds between the pair of bases
hydrogen bonds between the pair of bases
None of these
covalent bonds between the pair of bases

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DNA Structure and Replication
One hypothesis of DNA replication suggested that the parental DNA molecules are broken into fragments. Both strands of DNA in each of the daughter molecules are made up of an assortment of parental and new DNA. This statement refers to which hypothesis?

Conservative theory
Evolutionary theory
Dispersive theory
Semi-conservative theory

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DNA Structure and Replication
The packing ratio of nucleosomes is about

9
8
7
6

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DNA Structure and Replication
Proteins which help to open the double helix for DNA synthesis are

single stranded binding proteins
DNA topoisomerase
DNA helicases
ligase

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DNA Structure and Replication
Each replication bubbles consists of

4 replication forks
2 replication forks
1 replication forks
3 replication forks

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