18. Refer to Models 1 and 2 to complete the chart below. Write yes or no in the box for cach cell.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

d. organisms have cells with different shapes and functions.