NEET 2017 · Class 12

Biotechnology: Principles and Processes

A gene whose expression helps to identify transformed cell is known as :

  1. (A)Vector
  2. (B)Plasmid
  3. (C)Structural gene
  4. (D)Selectable marker

The NCERT line that answers it

Verbatim line

In addition to 'ori', the vector requires a selectable marker, which helps in identifying and eliminating non-transformants and selectively permitting the growth of the transformants.

Chapter
Biotechnology: Principles and Processes
Section
9.2 Tools of Recombinant DNA Technology
Page
8
Words matched
16 of 25

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

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states that a selectable marker helps identify transformed cells, directly matching the MCQ definition.

We did this for 1,565 questions.

Every one traced to the exact sentence in NCERT that answers it, including 90% of the 2026 paper. Sit a mock on the real NEET 2027 computer interface and every mark you drop comes back with its line attached.

Question text is reproduced from the published NEET 2017 paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.