A
In 1928, Frederick Griffith injected four groups of mice with different strains of the bactena, Streptococcus pneumoniae. The smooth atrain nad a polysaccharide capsule that protected the bacteria from the mouse's immune system. The rough strain did not have this capsule The details of each group and the results of the experiment are shown in the table below
Use the table to answer the question.
Bacteria
After injection with bacteria
mice died
mice survived
mice survived
Group 4 rough strain mixed with heat-killed smooth strain mice died
Which conclusion about Group 4 is MOST strongly supported by the results of the experiment?
(1 point)
A virus carned DNA from the smooth strain to the rough strain.
The rough strain took in DNA from the heat-killed smooth strain.
The rough strain deveroped a genetic mutation during binary fission
The smooth strain transferred DNA to the rough sirain through conjugation
Group 1 smooth strain
Group 3 heat-killed smooth strain
Group 2 rough strain