Two technicians are describing engine operation and requirements at high altitude technician a says that when traveling at high altitudes the engine produces more power technician b says that at high altitudes the octane rating of fuel doesn't need to be as high because the engine can't take in as much air who is correct?

Which best describes the role or restriction enzymes in the analysis of edna a. to break dna into fragments that vary in size so they can be sorted and analyzed b. to amplify small amounts of dna and generate large amounts of dna for analysis c. to purify samples of dna obtained from the environment so they can be analyzed d. to sort different sizes of dna fragments into a banding pattern that can be analyzed