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): If both strands of DNA act as a template for transcription, it would complicate the genetic information transfer machinery. Reason (R): Two RNA molecules with complementary sequences would be produced, which would pair to form double-stranded RNA, preventing translation into proteins. In the light
Options
- ABoth Assertion (A) and Reason (R) are correct but Reason (R) is not the correct explanation of Assertion (A).
- BBoth Assertion (A) and Reason (R) are correct and Reason (R) is the correct explanation of Assertion (A).
- CAssertion (A) is correct but Reason (R) is not correct.
- DAssertion (A) is not correct but Reason (R) is correct.
Correct answer
B. Both Assertion (A) and Reason (R) are correct and Reason (R) is the correct explanation of Assertion (A).
Step-by-step solution
According to NCERT, if both strands of DNA act as templates for transcription, they would code for RNA molecules with complementary sequences. These two RNA molecules would pair to form double-stranded RNA (dsRNA). The formation of dsRNA would prevent the RNA from being translated into proteins by ribosomes, thereby complicating and halting the genetic information transfer machinery. Therefore, both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A). Answer: Both Asser