The Restriction Enzyme AcyI Cuts Duplex DNA at the Sequence

question 56

Multiple Choice

The restriction enzyme AcyI cuts duplex DNA at the sequence 5' GPuCGPyC 3'
3' CPyGCPuG 5'
Where Pu = either purine and Py = either pyrimidine.On average, what is the length of DNA fragments in base pairs created by this enzyme? (Assume that the four bases are found in equal frequencies in this DNA sample.)

• A)48
• B)512
• C)4096
• D)256
• E)1024

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Definitions:

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Macrophage

A form of white blood cell which performs the action of engulfing and digesting cellular remnants, alien substances, bacteria, and tumor cells via a process termed phagocytosis.

B Lymphocyte

A type of white blood cell important for the immune system, responsible for producing antibodies.

Carcinogen

A substance capable of causing cancer in living tissue.