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Recombinant DNA

Recombinant DNA
Which type of restriction endonuclease cuts the DNA within the recognition site?

Type I
All of the these
Type III
Type II

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Recombinant DNA
A short molecule containing 2-20 nucleotide is

mononucleotide
vector
plasmid
oligonucleotide

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Recombinant DNA
Which of the following vector can maintain the largest fragment of foreign DNA?

Plasmid
Cosmid
YAC
Phage

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Recombinant DNA
What is the normal role of restriction endonucleases in bacterial cells?

To degrade invading phage DNA
To degrade the bacterial chromosome into small pieces during replication
All of these
To produce RNA primers for replication

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Recombinant DNA
An animal, that has gained new genetic information from the acquisition of foreign DNA, is considered as

a chimera
an enzyme that links DNA molecules
a vector
a transgenic animal

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Recombinant DNA
Enzymes that recognize and cleave specific 4 to 8 base pair sequences of DNA are

DNA gyrase
helicases
DNA ligase
restriction endonucleases

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