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STD 12 - 9. biotechnology principlas and process — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 9. biotechnology principlas and process1 Mark
MCQ
In Recombinant $DNA$ technology antibiotics are used
  • A
    As selectable markers
  • ✓
    To keep medium bacteria-free
  • C
    To detect alien DNA
  • D
    To impart disease-resistance to the host plant
✓

Answer

Correct option: B.
To keep medium bacteria-free
b
The correct answer is option (2) because antibiotics are used in RDT to keep medium or culture bacteria-free.

Selectable marker helps in identifying and eliminating non-transformants and selectively permitting the growth of the transformants. They undergo insertional inactivation upon addition of alien DNA in their ORF.

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