In the transformation experiment of pneumococcus, the transformation factor for the transformation of R-type bacteria into S-type bacteria is_______
A. Capsule
B. protein
C. R-type RNA
D. S-shaped DNA
Answer:D
In the transformation experiment of pneumococcus, the transformation factor for the transformation of R-type bacteria into S-type bacteria is_______
A. Capsule B. protein C. R-type RNA D. S-shaped DNA