Griffith's experiment demonstrated transformation because a mouse injected with live R and heat-killed S strains of Streptococcus pneumoniae resulted in death of the mouse and the isolation of live R as well as live S cells. Hypothesize as to the type of cells that Griffith would have observed if transformation had NOT occurred.

A. Griffith would have isolated both live R and heat-killed S cells from the mouse host.
B. Griffith would have isolated no cells from the mouse host.
C. Griffith would have isolated only live R cells from the mouse host.
D. Griffith would have isolated only live S cells from the mouse host.


Answer: C

Biology & Microbiology

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