brebun4742
13.11.2019 •
Biology
Frederic griffith discovered transformation in his experiments on mice and pneumococcus bacteria. he injected the mice with combinations of harmless, r-strain bacteria and disease-causing s-strain bacteria. which combination of bacteria killed the mice and showed that transformation occurred?
a.
heat-killed r-strain and live s-strain
b.
heat-killed s-strain and live r-strain
c.
heat-killed bacteria of both strains
d.
live bacteria of both strains
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