Dna Fingerprinting
Mediumbiology
Variable number tandem repeats (VNTRs) are useful because they:
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Solution
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Show length polymorphism
- Nature of VNTR: These are short sequences of DNA (satellite DNA) that repeat multiple times in tandem at specific locations on chromosomes.
- Polymorphism: The number of repeats varies significantly from person to person (except between monozygotic twins).
- Application: Because the number of repeats (and thus the length of the fragment) is different, comparing these length polymorphisms allows scientists to uniquely identify individuals.
- Mechanism: DNA fingerprinting uses VNTRs as probes to create unique patterns of bands on a gel.
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About This Question
- Subject
- biology
- Chapter
- biotechnology and its applications
- Topic
- dna fingerprinting
- Difficulty
- Medium
- Year
- 2025
This medium difficulty biology question is from the chapter biotechnology and its applications, covering the topic of dna fingerprinting. It appeared in the 2025 exam. Practice this and similar questions to strengthen your understanding of biotechnology and its applications concepts.
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