Short Tandem Repeats

What does STR stand for?

• Single tandem repeat

• Single track DNA repeat

• Short Track Rest

• Short Tandem Repeat

Which children are biologically related to the father, this uses STR analysis of the loci TH01?

• Child C

• Child D

• Child E

• Non of them

Tags

NGSS.HS-LS3-1

Look at the bands produced in the gel electrophoresis, which suspect matches the crime scene?

• Non of them

• Suspect 1

• Suspect 2

• Suspect 3

• More than one

Explain why you chose the answer you gave (which suspect matches the crime scene DNA)?

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What is the primary use of Short Tandem Repeats (STRs) in forensic science?

• DNA profiling

• Gene therapy

• Protein synthesis

• Cell division

Which of the following best describes Short Tandem Repeats (STRs)?

• Long sequences of DNA

• Short sequences of DNA repeated in tandem

• Single nucleotide polymorphisms

• Non-repetitive DNA sequences

How are STRs typically analyzed in a laboratory setting?

• Through gel electrophoresis

• Using a microscope

• By X-ray crystallography

• With a spectrophotometer

What is the main advantage of using STRs in genetic analysis?

• High mutation rate

• High variability between individuals

• Low cost of analysis

• Ease of extraction from RNA

In which part of the DNA are STRs most commonly found?

• Exons

• Introns

• Promoter regions

• Non-coding regions

How many base pairs are typically found in a single STR unit?

• 1-2 base pairs

• 3-7 base pairs

• 10-15 base pairs

• 20-25 base pairs