In his transformation experiments, what did Griffith observe?
A) Mutant mice were resistant to bacterial infections.
B) Mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form.
C) Mixing a heat-killed nonpathogenic strain of bacteria with a living pathogenic strain makes the pathogenic strain nonpathogenic.
D) Infecting mice with nonpathogenic strains of bacteria makes them resistant to pathogenic strains.
E) Mice infected with a pathogenic strain of bacteria can spread the infection to other mice.
The steps of bacterial transformation.
Maternal inheritance of mitochondrial mutant phenotype poky
In the 1960s, social psychologists did highly creative but controversial experiments. This photo, ...
The mitochondrion is the center of energy transformation in the cell
Frederick Griffith’s experiment identifying a ″transformation factor″ responsible for heredity
P element–mediated transformation in Drosophila