Avery,MacLeod,and McCarty (1944)demonstrated That DNA Was the Molecule of Heredity

Multiple Choice

Avery,MacLeod,and McCarty (1944) demonstrated that DNA was the molecule of heredity by treating heat-killed Streptococcus pneumoniae S (smooth) strain with DNase,thereby preventing transfer of the "transforming substance" from the killed S strain to the live R (rough) strain when the two were mixed together and injected into mice.Another way that one could demonstrate transformation in bacteria would be to extract DNA from

A) an R strain and mix with cells of an S strain.
B) both S and R strains and mix to allow recombination to take place.
C) an ampicillin-sensitive strain and mix with cells of an ampicillin-resistant strain.
D) an S strain and mix with cells of an R strain.
E) none of the above