Question
Question: Frederick Griffith conducted experiments testing the virulence of two strains of Streptococcus (R-st...
Frederick Griffith conducted experiments testing the virulence of two strains of Streptococcus (R-strain and S-strain). His experiment had 4 specific “treatments” to it.
Treatment, 1, he injected mice with the R-strain and the mice lived.
Treatment 2, he injected mice with the S-strain and the mice died.
Treatment 3, he injected mice with heat-killed S-strain and the mice lived.
Treatment 4, he injected mice with heat-killed S-strain mixed R-strain and the mice died.
Which treatment in his experiment is considered a control treatment?
A
Treatment 3 is the control treatment.
B
Treatment 1 is the control treatment
C
There are no control treatments in this experiment.
D
Treatments 1 and 2 are control treatments.
Answer
Treatments 1 and 2 are control treatments.