"DNA fingerprinting" is a recently-introduced biochemical procedure that uses a pattern derived from a person's genetic material to match a suspect's genetic material against that of a specimen from a crime scene. Proponents have claimed astronomically high odds against obtaining a match by chance alone. These odds are based on an assumption that there is independence between the different characteristics represneted by a single pattern.
You should try to understand the question in English, not in Chinese. Otherwise you are wasting valuable time by translating E->C and C->E during the real test. And we all know how that waste would affect your performance in LSAT.