Question 2 To investigate a possible relationship between two factors, such as acidity and solubility, you must first identity the
variables involved in the experiment. Identify the independent variable, the dependent variable, and any possible
confounding variables within this experiment.

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."