When a mixture of live nonvirulent bacteria and dead virulent bacteria was injected into mice, griffith unexpectedly found that the injected mice died. he explained this result by suggesting that the nonvirulent bacteria are . activated. b. transformed. c. translated. d. transcribed. e. expressed.

B. transformed

Explanation:

When he injected the mouse with the live Nonvirulent and heat-killed virulent bacteria, it transformed into a virulent bacteria, in turn killing the mouse.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).