Answer:
True
Transformation is the process through which bacteria acquire new genes.These new genes are the genetic information that the bacteria transfer from one to another.
Griffth based his discorvery on the development of Vaccine for pnuemonia.He made use of two strains of the bacteria.The non-virulent II-R strain and the virulent III -R strain.
He killed the III -R strain by exposing the bacteria to heat radiation.Then added them to the non-virulent III bacteria strain.(note non of these is pathogenic to the mice-host).
However,when the mixture was injected into the mouse,it was realized that the host developed pneumonia. He isolated the two strains of bacteria from the host.
Therefore,if the II-strain was non virulent when injected into the host and the virulent III-strain has been deadened,definitely the virulence of III-strain must have transformed the non virulent II to make it lethal and therefore cause pneumococcal in the host.
This virulent characteristic were confined in the DNA of the lethal III -strain,and were transformed to the non virulent II-strain to become virulent.
