By Air: Fly to either Buffalo New York or Toronto Canada. Buffalo/Niagara International Airport is 25 miles/41 kilometers to Niagara Falls. Toronto Canadaâs Lester Pearson International airport is 78 miles/125 kilometers to the Falls. The airport you choose to arrive at usually depends on where you are coming from.
2. A device or agent used to detect or explore a substance, e.g., a molecule used to detect the presence of a specific fragment of DNA or RNA or of a specific bacterial colony. 3. To enter and explore, as with a probe.
The choice of molecular probe will depend on which compound or structure is being studied as well as on what property is of interest. Radioactive DNA or RNA sequences are used in molecular genetics to detect the presence of a complementary sequence by molecular hybridization.