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)?

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