The Variable Number Tandem Repeat (VNTR) analysis differs from Short Tandem Repeat (STR) analysis in DNA fingerprinting by
Question and options
The Variable Number Tandem Repeat (VNTR) analysis differs from Short Tandem Repeat (STR) analysis in DNA fingerprinting by
- VNTRs involve longer repeating sequences than STRs
- STRs involve longer repeating sequences than VNTRs
- VNTRs and STRs are interchangeable terms
- Both VNTRs and STRs refer to non-repeating sequences
Answer and explanation
Correct answer: A - VNTRs involve longer repeating sequences than STRs
VNTRs (minisatellites) have repeat units of about 10-100 bp, while STRs (microsatellites) have 2-6 bp repeats. VNTRs therefore involve longer repeating sequences.
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