Question: In the 1 9 2 0 s , Frederick Griffith conducted an experiment in which he mixed the dead cells of a bacterial strain that

In the

1920

,

Frederick Griffith conducted an experiment in which he mixed the dead cells of a bacterial strain that can cause pneumonia with live cells of a bacterial strain that cannot. When he cultured the live cells, some of the daughter colonies proved able to cause pneumonia. Which of the following processes of bacterial DNA transfer does this experiment demonstrate?

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