Assertion : The technique of DNA Fingerprinting was initially developed by Alec Jeffreys.
Reason : As used earlier, involved Southern blot hybridisation using radiolabelled VNTR as a probe .

A and R both are true but R is not the correct explanation of A .

The technique of DNA Fingerprinting was initially developed by Alec Jeffreys. He used a satellite DNA as probe that shows very high degree of polymorphism. It was called as Variable Number of Tandem Repeats (VNTR). The technique, as used earlier, involved Southern blot hybridisation using radiolabelled VNTR as a probe .