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Biology · 2022 · 3 marks
CBSE 2022 · Region 3 · Set 3 · Q9
(a) Given below is the stepwise schematic representation of the process of electrophoresis. Identify the 'alphabets' representing (i) Anode end (ii)…
(a)
Given below is the stepwise schematic representation of the process of electrophoresis. Identify the 'alphabets' representing (i) Anode end
(ii)
smallest/lightest DNA strand in the matrix (iii) Agarose gel
(b)
What is elution ? State the importance of elution in this process.
Marking-scheme solution
(a)(i)
S (ii) R (iii) T
(b)
● Process of cutting of separated bands of DNA , and extracting from the agarose gel. - Purified DNA is used in rDNA technology / genetic experiments.
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CBSE Class 12 Biology past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.