NEET 2019 · Class 12

Biotechnology: Principles and Processes

A selectable marker is used to: [NEET OD 2019]

  1. (A)help in eliminating the non-transformants, so that the transformants can be regenerated
  2. (B)identify the gene for a desired trait in an alien organism
  3. (C)select a suitable vector for transformation in a specific crop
  4. (D)mark a gene on a chromosome for isolation using restriction enzyme

The NCERT line that answers it

Verbatim line

If we spread the transformed cells on agar plates containing ampicillin, only transformants will grow, untransformed recipient cells will die.

Chapter
Biotechnology: Principles and Processes
Section
9.3.4 Insertion of Recombinant DNA into the Host Cell/Organism
Page
12
Words matched
51 of 51

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

6667, emb=1.0, combined=0.8667). Verified: high — The span explicitly states that only transformants grow while non-transformants die on ampicillin plates, which directly matches option A's description of eliminating non-transformants so transformants can be regenerated.

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