Question

Read the article and use the information to answer the question that follows.

Forensic DNA


How can DNA be used to help solve a crime?
Short answer
DNA collected from blood, saliva, semen, skin cells or other tissues at a crime scene can be turned into a genetic profile that is compared with suspects or searched in databases. A match can link a person to the scene, exclude someone, identify a victim, connect multiple crimes, or generate investigative leads. Because DNA is highly individual, a well‑interpreted match provides powerful evidence when proper procedures and statistics are used
What information did you include in your response? Check all that apply.

Each person’s DNA is unique.

Scientists use variable regions in DNA to create a DNA profile.

DNA samples can be taken from blood, bone, hair, or other body tissues and
products.

DNA from a crime scene can be compared to DNA from a suspect.

DNA typing can be used to solve old cases.

Answer 1

Selected: 1, 3, 4.

- 1 (Each person’s DNA is unique): included — the response says “Because DNA is highly individual…”
- 3 (DNA samples can be taken from blood, bone, hair, or other body tissues and products): included — the response lists “blood, saliva, semen, skin cells or other tissues.”
- 4 (DNA from a crime scene can be compared to DNA from a suspect): included — the response says profiles are “compared with suspects or searched in databases.”

Not included: 2 (variable regions) and 5 (solving old cases) — neither were mentioned.