What did Engelmann observe from his prism experiments

The green alga used by T.W Engelmann in his prism experiment is

The green alga used by T.W Engelmann in his prism experiment is

What did S.L. Miller observe in his experimental set-up?

What did S.L. Miller observe in his experimental set-up?

What did S.L. Miller observe in his experimental set-up?

Why did mendel choose garden pea for his experiments?

What did Miller obtain from his experiment simulating conditions of early earth?

What did Miller obtain from his experiment simulating conditions of early earth?

What is meant by R-cells and S-cells with which Frederick Griffith carried out his experiments on Diplococcus pneumoniae? What did he prove from these experiments?