Biology, 03.12.2019 01:31 anonymousanon
Fred griffith studied two strains of streptococcus pneumonia, one that causes a lethal infection when injected into mice, and a second that is harmless. he observed that pathogenic bacteria that have been killed by heating can no longer cause an infection. but when these heat-killed bacteria are mixed with live, harmless bacteria, this mixture is capable of infecting and killing a mouse. what did griffith conclude from this experiment?
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Fred griffith studied two strains of streptococcus pneumonia, one that causes a lethal infection whe...
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