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Biology · 2025 · 1 mark
CBSE 2025 · Region 7 · Set 2 · Q1
pBR which is frequently used as a vector for cloning gene in E. coli is a/an:
pBR which is frequently used as a vector for cloning gene in E. coli is a/an :
Official answer
(B)
Modified bacterial plasmid
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CBSE Class 12 Biology past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.