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STD 12 - 5. molecular basis of inheritance — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 5. molecular basis of inheritance1 Mark
MCQ
Transformation was discovered by
  • A
    Meselson and Stahl
  • B
    Hershey and Chase
  • ✓
    Griffith
  • D
    Watson and Crick.
✓

Answer

Correct option: C.
Griffith
c
(c) : Transformation was first studied by S.F. Griffith in $1928$ while studying Streptococcus pneumoniae. He found that R­Type non virulent bacteria pick up virulence from heat killed virulent S­type bacteria and transform into virulent forms. It was this experiment which indicated presence of a ‘transforming principle’ which was later found out to be $DNA$, by Avery et al.

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