Question

In a series of experiments with streptococcus and mice, Griffith concluded that R-strain bacteria had been transformed. Explain.

Answer 1

In Griffith experiment, it shows that DNA can be transformed. this implies that DNA follows transforming principles. for this particular experiment Griffith includes two bacterial strains i.e. s- strain and r-strain. while S-strain kills the mice and r -strain doesn't causing any harm to mice. when S -strain is heat killed and inserted into the mice, the mice survives. after that when s-strain and r-strain both inserted in mice it kills the mice.

Explanation:

this is because:

1. s- strain when heat killed its DNA has been transformed due to excessive heat.
2. when s- strain incorporated with r- strain, the s-strain on combining with r-strain, s- strain transform the DNA of r-strain, as a result to this mice couldn't survive.