Only smooth cells grew after incubating live R and dead S Streptococcus pneumonia strains and plating on general LB media. The gene transfer from the dead S cells to the live R cells resulted in smooth cells growing. This occurred because conjugation between the dead S cells and live R cells resulted in the R cells acquiring the genes needed to produce the polysaccharide coating that makes the cells smooth.

1. Please add in depth explanation
(HARD) Suppose you repeated the Bernard Davis U-tube experiment with Streptococcus
pneumonia strains - live R (as strain A) and dead S (as strain B) cells. After incubations, you
plated cells on general LB media. What do you expect to observe? Why did it occur? Only
smooth cells grew. The gene transfer from S to R-cells resulted in smooth cells. D-amino acids,
L-amino acids, LPS, N - Only rough cells grew. The gt acetylmuramic acid, N -
acetylglucosamine, terminated by a filter. diaminopimelic acid, polysaccharide. This was the
correct answer. Both smooth and rough cells grew. Conjugation between S to R-cells resulted in
smooth cells. Both smooth and rough cells grew. The gene transfer from S to R-cells resulted in
smooth cells.