Whose dna is it?
Whose DNA was found at the crime scene? Explain how you came to your conclusion.
The DNA found at the crime scene belonged to Anna Garcia because her DNA strands match up with the DNA strands found at the crime scene. Explain the role that restriction enzymes and gel electrophoresis play in DNA profiling. Restriction Enzymes are used to cut DNA into small strands. The restriction enzymes cut the same size strands for the same person. However none of this matters without gel electrophoresis. Gel electrophoresis separates the DNA strands by size, smaller strands go further than the bigger strands. What would happen if the gel was placed with the DNA starting closest to the positive electrode? The DNA would not move because the DNA is slightly negatively charged, and opposites attract so the DNA strands would stay in place. Besides DNA profiling, for what other reasons might scientists and researchers use DNA analysis? Explain your reasoning. Scientists and Researchers might use DNA profiling to find lost relatives because relatives share most of their DNA. |