In Early Forensic Applications of DNA Fingerprinting, DNA Was Extracted

question 10

Multiple Choice

In early forensic applications of DNA fingerprinting, DNA was extracted from crime scene material, digested with restriction enzymes, and then analyzed. Today, PCR is used in the early steps of forensic DNA analysis. What advantage does PCR provide over the former method?

• A) PCR produces many more bands for fingerprint analysis, making it a more informative technique.
• B) PCR can analyze DNA, proteins, and carbohydrates, whereas restriction enzyme analysis is limited to DNA.
• C) PCR can cut DNA at many more sites than restriction enzymes can.
• D) PCR requires much less DNA for analysis.

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