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A polylinker increases the versatility of a DNA plasmid because it: (select all correct answers) A)...

A polylinker increases the versatility of a DNA plasmid because it: (select all correct answers)

A) facilitates the cloning of DNA segments.

B) contains a DNA sequence that confers resistance to ampicillin.

C) contains a DNA sequence to allow the vector to replicate.

D)contains DNA recognition sequences for several different restriction enzymes.

2. You have an E. coli plasmid whose sequence contains three EcoRI restriction sites. How many DNA fragments would result from a complete EcoRI restriction enzyme digest?

a. 1

b. 3

c. 4

d. 2

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