Correct!

Restriction endonuclease generated DNA fragments separated by gel electrophoresis and blot transferred onto a membrane filter are probed with a radioactive DNA fragment. This procedure is called:

A.	Gene cloning
B.	The Southern technique Yes, the Southern technique detects the location of DNA fragments on gel electrophoresis.
C.	The polymerase chain reaction
D.	Recombinant DNA
E.	Gene mapping