The figure below is the diagrammatic representation of the …

Biology Biotechnology Principles and Processes Image Based Problems Single Correct MCQ

Published on: August 14, 2026

The figure below is the diagrammatic representation of the E. Coli vector pBR 322. Which one of the given options correctly identifies its certain component(s)?

ori - orignal restriction enzyme

rop-reduced osmotic pressure

Hind III, EcoRI - selectable markers

amp R , tet R - antibiotic resistance genes

Text Solution

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The correct answer is:

In the pBR322 vector:

amp R = gene for ampicillin resistance

tet R = gene for tetracycline resistance

These are selectable marker genes used to identify transformed bacteria.

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