NEET 2026
- Exam
- NEET
- Year
- 2026
- Subject
- Biology
- Chapter
- Chapter
NEET 2026 · Biology · Chapter
Which of the following features of a cloning vector is responsible...
Which of the following features of a cloning vector is responsible for helping in the identification and elimination of non-transformants while selectively permitting the growth of transformants?
Options
- AOrigin of replication (ori)
- BSelectable marker
- CMultiple cloning site
- DPromoter sequence
Correct answer
B. Selectable marker
Step-by-step solution
A selectable marker is a gene introduced into a cell, especially a bacterium or to cells in culture, that confers a trait suitable for artificial selection.
It helps in identifying and eliminating non-transformants and selectively permitting the growth of the transformants.
For example, genes encoding resistance to antibiotics such as ampicillin, chloramphenicol, tetracycline, or kanamycin are considered useful selectable markers for E. coli.
Answer: Selectable marker
It helps in identifying and eliminating non-transformants and selectively permitting the growth of the transformants.
For example, genes encoding resistance to antibiotics such as ampicillin, chloramphenicol, tetracycline, or kanamycin are considered useful selectable markers for E. coli.
Answer: Selectable marker