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DNA Structure and Replication

DNA Structure and Replication
DNAs when charged, migrate in a gel towards the

none of these
positive pole
negative pole
will not migrate

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DNA Structure and Replication
DNA replication results in

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

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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

protamines
All of these
pyrimidines
purines

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DNA Structure and Replication
Without telomerase, what would happen to the ends of chromosomes after each round of replication?

Chromosomes would get longer
None of these
Nothing would happen
Chromosomes would become progressively shorter

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DNA Structure and Replication
DNA replication in eukaryotes occurs only in

G2 phase
M phase
S phase
G1 phase

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

DNA topoisomerase
DNA helicases
ligase
single stranded binding proteins

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