Question

Assertion :DNA fingerprinting is the same for every cell, tissue and organ of a person. Reason: DNA fingerprint is used for the treatment of inherited disorders like huntington's disease, alzheimer's disease, 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 Jeffrey in 1986. This technique reveals polymorphism in DNA. The DNA fingerprint will be the 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 the variable number of tandem repeats (VNTR). DNA fingerprints are used in archaeology, paleontology, and various medical diagnostics including genetic disorders. The technique is extensively used for the 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.

So, the correct answer is option C.