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  4. Assertion (A) DNA fingerprinting is very well-known for its application in paternity testing in case o f disputes. Reason (R) It employs the principle of DNA polymorphism.

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Q. Assertion (A) DNA fingerprinting is very well-known for its application in paternity testing in case o f disputes.
Reason (R) It employs the principle of DNA polymorphism.

Molecular Basis of Inheritance

Solution:

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
DNA fignerprinting is very well-known for its application in paternity testing as it employs the principle of DNA polymorphism. DNA fingerprinting involves the use of satellite DNA. These sequences do not code for any proteins, but show high degree of polymorphism.
These serve as the basis of DNA fingerprinting. These polymorphisms are inheritable from parents to children and thus DNA fingerprinting is the basis of paternity testing.