Which of the following restriction enzymes produces blunt ends

Options

A. Sal I
B. Xho I
C. EcoRV
D. HIND III

Answer

C

Explanation

Two types of end results from cuts made by restriction enzymes: blunt and sticky.
For blunt or flush end a simple double stranded cut is made in the middle of the recognition sequence. For example PVU II, ALU I, and EcoRV recognition and cutting site for EcoRV is
GAT -ATC
CTA - TAG