CBSE 2026 · Region 4 · Set 1 · Q23 · 3 marks
(a)Construct a complete transcription unit with promoter and terminator on the basis of the hypothetical coding strand given below:
(b)Write the RNA strand transcribed from the above transcription unit along with its polarity.
(a)
Construct a complete transcription unit with promoter and terminator on the basis of the hypothetical coding strand given below:
(b)
Write the RNA strand transcribed from the above transcription unit along with its polarity.
Marking-scheme solution
(a)
The RNA transcribed is
$\displaystyle 5$′A U G C A U G C A U A G $\displaystyle 3$′
(b)
The RNA transcribed as
$\displaystyle 5$ 'G A U A C G U A C G U A $\displaystyle 3$'
Molecular Basis of InheritanceTranscriptionApplyshort_answermedium
More from Molecular Basis of Inheritance
- Explain how the addition of lactose in the medium regulates the switching on of the lac operon in bacteria.2025 · asked 3×
- The type of bond represented by the dotted line '-----' in a schematic polynucleotide chain is:2024 · asked 3×
- Which of the options has correct identification of 'P', 'Q' and 'R' in the illustration of 'Central Dogma'…2024 · asked 3×
- Study the diagram given below and answer the questions that follows: Identify the structure shown in the…2025 · asked 3×
- What is a genetic code? Why did scientists feel the need to propose a genetic code? Genetic code is said to…2026 · asked 3×
- Assertion: Primary transcripts in eukaryotes are subjected to splicing to remove the introns. Reason (R):…2024 · asked 3×
- Given below is a heterogeneous RNA formed during Eukaryotic transcription: How many introns and exons…2025 · asked 3×
- Consider the given data of a hypothetical small portion of mRNA that codes for a functional polypeptide chain…2024 · asked 3×
CBSE Class 12 Biology past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.