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DNA Structure and Replication

DNA Structure and Replication
Which polymerase is active in DNA repairing

Polymerase III
Polymerase I
Polymerase II
none of these

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

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

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DNA Structure and Replication
The chromosomal DNA complexes with

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

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DNA Structure and Replication
DNA polymerases I also has

3'-5'exonuclease activity
5'-3' exonuclease activity
both (a) and (b)
5'-3' endonuclease activity

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DNA Structure and Replication
In DNA replication, one new strand is synthesized complementary to an old (parent) strand and is referred as

semiconservative
discontinuous
antiparallel
mutational

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DNA Structure and Replication
In sperm heads, DNA is particularly highly condensed and the histones are replaced with small basic protein called

All of these
protamines
pyrimidines
purines

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