Answer:
Check My Work To construct the first DNA fingerprint, Dr. Alec Jeffries used _restriction fragments_ and _Southern blotting_ to produce a characteristic set of DNA fragments.
Step-by-step explanation:
A restriction fragment is formed when a DNA molecule is cleaved using restriction enzymes. While on the other hand this fragment is sequenced in southern blotting.
A technique used in laboratory to detect specific sequence of DNA in tissue or blood sample is called southern blotting.