Question

EcoRI is

• A. A restriction enzyme
• B. A plasmid
• C. Used to join two DNA fragments
• D. The abbreviation for bacterium Esherichia coli

Answer 1

Answer: (A)

A restriction enzyme

EcoRI is the restriction enzyme. This is also known as restriction endonucleases. These are the enzymes which can identify the recognition sites. The recognition is the of the enzyme is GAATTC. These are the sites at which the enzyme cleaves the DNA specifically. These enzymes are commonly used in the rDNA technology and genetic engineering techniques.

Thus, the correct answer is option A.