Transformation experiment was first performed on which bacteria?
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Transformation experiment was first performed on which bacteria?
✓ Correct answer: b) Diplococcus pneumoniae
ExplanationCorrect Answer: B. Diplococcus pneumoniae Explanation: The transformation experiment was first performed by Frederick Griffith in 1928. He worked with two strains of Diplococcus pneumoniae (now known as Streptococcus pneumoniae): S strain (smooth, virulent) R strain (rough, non-virulent) Griffith discovered that the heat-killed S strain could transfer genetic material to the R strain, transforming it into a virulent form.This experiment was the first evidence of the transfer of genetic information (later identified as DNA).Incorrect Options: A. E. coli – Used in later experiments (e.g., Hershey-Chase), not Griffith’s.C. Salmonella – Not involved in the transformation experiment.D. Pasteurella pestis – Old name for Yersinia pestis (plague bacterium); unrelated. ✅ Final Answer: B. Diplococcus pneumoniae
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