✓ Board-verified
Biology · 2024 · 1 mark
Biotechnology : Principles and ProcessesProcesses of Recombinant DNA Technology1 markUnderstandassertion reason
CBSE 2024 · Region 2 · Set 3 · Q16
Assertion (A): A recombinant DNA which is inserted within the coding sequence of β -galactosidase does not produce blue coloured colonies when…
Assertion (A) : A recombinant DNA which is inserted within the coding sequence of $\displaystyle \beta$-galactosidase does not produce blue coloured colonies when treated with a chromogenic substrate.
Reason (R) : Insertional inactivation occurs when a recombinant DNA is introduced in the coding sequence of the enzyme.
Official answer
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
All Biotechnology : Principles and Processes questions2024 question paperNCERT solutions: Biotechnology : Principles and ProcessesPractice Biotechnology : Principles and Processes →
More from Biotechnology : Principles and Processes
- Given below is the restriction site of a restriction endonuclease Pst-I and the cleavage sites on a DNA molecule. 5^′ C-T-G-C-A ↓- G 3^′; 3^′ G ↑-…2023 · asked 2×
- The linking of the antibiotic resistance gene with the plasmid vector of Salmonella typhimurium by Stanley Cohen and Herbert Boyer was made possible…2024
- Which of the following is not required for PCR?2024
- With reference to the set-ups (A, B and C) given below, of the electrophoretic separation of a mixture of DNA fragments of varied lengths, answer the…2024
- (i) Given below is the schematic representation of the process of electrophoresis. Identify the alphabets representing the: (I) Anode end, and (II)…2026
- Assertion: The stirrer facilitates the even mixing of oxygen availability in a bioreactor. Reason (R): Stirred-tank bioreactors generally have a flat…2024
- The organism used in construction of the first artificial recombinant DNA by Cohen and Boyer in 1972 was:2023
- How is DNA isolated in purified form from a bacterial cell? OR Explain how human functional insulin was produced by using recombinant DNA (rDNA)…2025
CBSE Class 12 Biology past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.