VNTR: Variable number tandem repeat (or VNTR) is a location in a genome where a short nucleotide sequence is organised as a tandem repeat. What is VNTR? VNTR or the Variable Number of Tandem Repeats are the repeated DNA sequences at a defined locus. Click here to get an answer to your question ✍ (a) Expand VNTR and. sir what is the difference between vntr and probe - Biology.