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Biotechnology: Principles and Processes — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYBiotechnology: Principles and Processes1 Mark
MCQ
Two statements are given $-$ one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion : $\text{DNA}$ fingerprinting involves identifying differences in specific regions of $\text{DNA}$ sequence.
Reason : $\text{ DNA}$ fingerprinting is the basis of paternity testing.
  • A
    Both assertion and reason are true and reason is the correct explanation of assertion.
  • ✓
    Both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    Assertion is true but reason is false.
  • D
    Both assertion and reason are false.
✓

Answer

Correct option: B.
Both assertion and reason are true but reason is not the correct explanation of assertion.
$\text{DNA}$ fingerprinting involves identifying differences in some specific regions in $\text{DNA}$ sequence called as repetitive $\text{DNA}$, because in these sequences, a small stretch of $\text{DNA}$ is repeated many times.
These sequences normally do not code for any proteins, but they form a large portion of human genome.
These sequence show high degree of polymorphism and form the basis of $\text{DNA}$ fingerprinting.
As the polymorphisms are inheritable from parents to children, $\text{DNA}$ fingerprinting is the basis of paternity testing in case of disputes.

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