- A Coding exons
- B Satellite DNA (VNTRs)
- C Promoter sequences
- D tRNA genes
Correct answer: B. Satellite DNA (VNTRs)
Explanation: DNA fingerprinting exploits polymorphism in repetitive satellite DNA sequences called VNTRs (Variable Number of Tandem Repeats), which vary between individuals.
Concept context
DNA structure, replication, transcription, translation, the genetic code, and gene regulation (lac operon). The single most important chapter for NEET molecular biology.