Which Is Incorrect About Restriction Enzymes

question 57

Multiple Choice

Which is incorrect about restriction enzymes?

• A) They are key tools that make genetic engineering possible.
• B) They are found in bacteria and eukaryotes.
• C) They were discovered by Werner Arber and Hamilton Smith in 1960s.
• D) A specific enzyme will always cut at the same sequence.
• E) Bacteria may possess them naturally to rid themselves of viral DNA.

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