Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
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): In a transcription unit, the promoter is said to be located towards the 5' -end of the structural gene. Reason (R): The convention in defining the regions of a transcription unit is based on the polarity of the template strand. In the light of the above statements, choose the most appropriate answe

Options

  1. AAssertion (A) is true but Reason (R) is false.
  2. BBoth Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
  3. CBoth Assertion (A) and Reason (R) are true but Reason (R) is NOT the correct explanation of Assertion (A).
  4. DAssertion (A) is false but Reason (R) is true.

Correct answer

A. Assertion (A) is true but Reason (R) is false.

Step-by-step solution

Assertion (A) is true because, by convention, the promoter is located towards the 5' -end (upstream) of the structural gene. Reason (R) is false because the convention in defining the regions of a transcription unit is based on the polarity of the coding strand, not the template strand. According to NCERT, all reference points while defining a transcription unit are made with respect to the coding strand, which has 5' 3' polarity. Therefore, Assertion (A) is true but Reason (R) is false. Answer: Assertion (A) is tr

Practice Molecular Basis of Inheritance on Quantrex Academy →

More from Molecular Basis of Inheritance

Which of the following statements about lac-operon is correct ? 2026Which of the following enzymes synthesizes precursor mRNA ? 2026Which of the following statements are correct with reference to a transcription unit ? A. A transcription unit in DNA is defined primarily by three regions : promoter, structural g 2026Which of the following statements are correct with reference to packaging of DNA helix ? A. Histones are organized to form a unit of eight molecules called histone octamer. B. Hist 2026Arrange the following steps of DNA fingerprinting in a correct sequence. A. Isolation of DNA and its digestion by restriction endonucleases. B. Hybridisation using a labelled VNTR 2026In the lac operon, the z gene codes for : 2026Given below are two statements : Statement I : In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic m 2025Match List I with List II: array |l|l|l|l| & List - I & & List - II A . & Alfred Hershey and Martha Chase & (i) & Streptococcus pneumoniae B. & Euchromatin & (ii) & Densely packed 2025 Full Molecular Basis of Inheritance list All NEET PYQs