Recombinant Dna

Question: Charged molecules are separated based on varying rates of migration through a solid matrix when subjected to an electric field. This technique is known as
[A].

photoreactivation

[B].

gel electrophoresis

[C].

autoradiography

[D].

blotting

Answer: Option B

Explanation:

No answer description available for this question.

Question: Bacterial cells protect their own DNA from degradation by restriction endonucleases by
[A].

methylating the DNA at the sites that the enzyme recognizes

[B].

deleting all recognition sites from the genome

[C].

not producing any restriction endonucleases

[D].

having anti restriction endonucleases

Answer: Option A

Explanation:

No answer description available for this question.

Question: Which type of restriction endonuclease cuts the DNA within the recognition site?
[A].

Type I

[B].

Type II

[C].

Type III

[D].

All of the these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Enzymes that recognize and cleave specific 4 to 8 base pair sequences of DNA are
[A].

DNA ligase

[B].

helicases

[C].

restriction endonucleases

[D].

DNA gyrase

Answer: Option C

Explanation:

No answer description available for this question.