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DNA Structure and Replication

DNA Structure and Replication
DNA segments capable of moving from one place in the genome to another is known as

moving elements
transposons
introns
retrovirus

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

Okazaki fragments
Replication forks
Leading strands
Replication origins

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DNA Structure and Replication
The enzyme responsible for breaking the hydrogen bonds, and thus separating the DNA strands during DNA synthesis is

strandase
none of these
DNA polymerase
helicase

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DNA Structure and Replication
The replication of a linear DNA molecule in a eukaryotic chromosome creates a problem which is reported to be sorted out by

using RNA as a template
shortening of the double stranded replicated portion
using enzyme called telomerase
None of these

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DNA Structure and Replication
The packing ratio of nucleosomes is about

9
6
7
8

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DNA Structure and Replication
DNA gyrase in E. coli

adds positive supercoils to chromosomal DNA
performs the same function as helicase in eukaryotes
can be inhibited with antibiotics
is required only at the oriC site

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