NEETZoologyMolecular Basis of Inheritance
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): DNA fingerprinting is widely used as the basis of paternity testing in case of disputes. Reason (R): Polymorphism in DNA sequence is inheritable from parents to children. In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
Step-by-step solution
Both Assertion and Reason are correct statements. DNA fingerprinting involves identifying differences in some specific regions in DNA sequence called repetitive DNA. These repetitive sequences show a high degree of polymorphism. According to NCERT, as the polymorphisms are inheritable from parents to children, DNA fingerprinting is the basis of paternity testing, in case of disputes. Therefore, the inheritability of DNA polymorphism is the exact reason why DNA fingerprinting can be used to establish biological rela