Question

Assertion :The DNA fingerprint is the same for every cell, tissue and organ of a person.
Reason: DNA fingerprint is used for treatment of inherited disorders like Huntigton's disease, Alzheimer's and sickle-cell anaemia.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is C Assertion is correct but Reason is incorrect

DNA fingerprinting was developed by Alec Jeffarey in $1986$. This technique reveals polmorphism in DNA. The DNA fingerprint will be same for all the cells of an individual. The genome of every human cell contains scattered, short highly repeated segments of DNA sequences. These are called minisatellites or Variable Number Tandem Repeats (VNTR).
The DNA fingerprints are used in archeology, palaeontology and various medical diagnostics including the genetic disorder. The technique is extensively used for diagnosis of many inherited diseases like Huntington's, Alzheimer's etc. in prenatal and newborn babies but not helpful in the treatment of these inherited disorders.