The liquid extract from dead virulent S-strain bacteria with normal R-strain bacteria is present in the culture vessels A, B and C. Different enzymes were added to the culture vessels and a brief incubation was given for the growth of the organism. The culture vessel A and B will undergo a transformation and new S-cells appears mixed with R-cells and in C vessel transformation does not occur, no change and only R cells will be observed. This is because the transformation principle tells that DNA is the genetic material that transforms the R-strain to S-strain and with DNase treatment, the DNA gets degraded and thus no transformation.
NEET UG 2014 — Zoology Biotechnology - Principles and Processes
2014mcqmedium
Examine the diagram and identify the correction option.
Official previous-year question
Held on 30 Apr 2014 · Verified 9 Jul 2026.
Options
- A
C-Transformation does not occur, no change and only R-strain will be observed.
- B
A-Transformation occurs and new R-strain will be converted to S-strain
- C
B-Transformation occurs and all the S-strain will be transformed to R-strain
- D
B-Transformation does not occur and new S-strain appears mixed with R-strain
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