In his transformation experiments,which of the following results did Griffith observe?
A)Mutant mice were resistant to bacterial infections.
B)Mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form.
C)Mixing a heat-killed nonpathogenic strain of bacteria with a living pathogenic strain makes the pathogenic strain nonpathogenic.
D)Infecting mice with nonpathogenic strains of bacteria makes them resistant to pathogenic strains.

Question

Quizplus · Accepted Answer

Griffith observed that mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form. This was demonstrated in his experiments with Streptococcus pneumoniae, where he mixed a heat-killed virulent strain with a non-virulent strain and observed that some of the non-virulent cells became virulent. This process was later identified as transformation, which involves the uptake and incorporation of foreign DNA by a bacterial cell. The other options listed are not accurate descriptions of Griffith's observations.

In His Transformation Experiments,which of the Following Results Did Griffith