How does exposure to chemicals that cause mutations increase the risk of developing cancer? carcinogens can cause mutations in genes. hazardous chemicals can damage proto-oncogenes. carcinogens can cause abnormal protein synthesis. the rate of cancer causing mutations increases with age. hazardous chemicals can damage tumor suppressor genes?

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."

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