What happened when griffin injected mice with the pneumonia-causing strain of bacteria that had been heat-killed?

The mice stayed healthy

Explanation:

Griffith used two pneumococcus strains in which one strain was virulent strain and another strain was non-virulent strain. When Griffith injected non-virulent strain then mice remained healthy. Then Griffith injected virulent strain in mice which caused pneumonia in the mice and the mice died.

Then he injected heat-killed virulent strain in the mice and mice remained healthy after that he mixed heat-killed virulent strain with normal non-virulent strain and saw that the mice get killed. He concluded that the non-virulent strain took something from virulent strain which transformed non-virulent strain into virulent strain.

Therefore mice stayed alive and healthy when Griffith injected mice with pneumonia-causing strain which was heat-killed.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

reflection is the bouncing back of a propagating wave when it encounters a barrier; usually shows an image of the source of light wave

1) bounces back from an opaque material

2) bounces back from the boundary

3) seen in mirrors

refraction is the bending of a propagating wave having a shift of direction as it passes through different media; usually seen in lenses to magnify or lessen

1) passes through a prism

2) moves from one medium to another

3) seen in lenses