Which one of the following experiments of Frederick Griffith resulted in the discovery of bacterial transformation?
S-strain (heat-killed) → injected into Mice → Mice lived
S-strain (heat-killed) + R-strain (live) → injected into Mice → Mice died
S-strain → injected into Mice → Mice died
R-strain → injected into Mice → Mice lived
According to the text, Frederick Griffith observed that while heat-killed S strain bacteria injected into mice did not kill them, and live R strain bacteria did not kill them, injecting a mixture of heat-killed S strain and live R strain bacteria resulted in the death of the mice. Moreover, he recovered living S bacteria from the dead mice. He concluded that the R strain bacteria had been transformed by the heat-killed S strain .
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