Where Do Restriction Enzymes Come From,and What Is Their Normal

question 11

Multiple Choice

Where do restriction enzymes come from,and what is their normal physiological function?

• A) Phage produces them and they replicate viral DNA.
• B) Phage produces them and they confer antibiotic resistance.
• C) They are yeast DNA replication enzymes.
• D) Bacteria produce them to protect against viral invasion.
• E) They are bacterial DNA replication enzymes.

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