DNA Forensics

Front

What technique is used to amplify a very small amount of DNA?

Back

PCR (Polymerase Chain Reaction)

Front

In STR analysis, what do all humans have in common regarding DNA sections?

Back

All humans have 13 DNA sections that are similar but differ by the number of repeated DNA blocks.

Front

What does a person's STR profile represent?

Back

A person's unique DNA profile based on Short Tandem Repeats (STRs).

Tags

NGSS.HS-LS3-2

Front

Which of the following is not a common source of DNA at a crime scene: blood, hair, teeth, or saliva?

Back

Teeth.

Front

What technique cuts human DNA at specific points called recognition sites?

Back

RFLP (Restriction Fragment Length Polymorphism).

Front

What is the purpose of PCR in DNA forensics?

Back

To amplify small quantities of DNA for analysis.

Front

What are STRs in the context of DNA forensics?

Back

Short Tandem Repeats, which are repeating sequences of DNA that vary among individuals.

Front

How many STR loci are typically analyzed in forensic DNA profiling?

Back

13 loci.

Front

What is the significance of recognition sites in RFLP?

Back

They are specific sequences where restriction enzymes cut the DNA.

Front

What type of biological evidence can be collected from a crime scene?

Back

Blood, hair, saliva, skin cells, and other bodily fluids.