Fingerprinting

• What is personal genomics?

  It is the study of an individual's DNA to understand genetic predispositions.
• What is 23andMe?

  It is a personal genomics and biotechnology company that provides DNA testing services.
• What are STRs and how are they used in DNA fingerprinting?

  • STRs (Short Tandem Repeats) are repeating sequences of DNA.
  • Used in DNA fingerprinting to identify individuals based on unique patterns.
• What are homologous chromosomes?

  They are pairs of chromosomes that have the same structure and gene sequence.
• What are non-coding DNA regions?

  They are segments of DNA that do not code for proteins.
• How do STRs contribute to DNA fingerprinting?

  STRs provide unique patterns that can differentiate individuals.
• What is the significance of the GATA, AGAT, and CTTG repeats in DNA fingerprinting?

  They are examples of specific STRs used to identify genetic differences.
• What is the purpose of using molecular probes in isolating STR regions?

  To target and isolate specific DNA sequences of interest.
• What is gel electrophoresis used for in DNA fingerprinting?

  It is used to separate DNA fragments based on size.
• In gel electrophoresis, which DNA fragments are closest to the wells?

  The largest fragments are closest to the wells.
• How can DNA fingerprinting help in criminal investigations?

  It can match DNA samples from a crime scene to potential suspects.
• What does it mean if a genetic analysis excludes 99.99% of men from paternity?


  It means that the tested man is highly likely to be the biological father.
• What are the key components of DNA fingerprinting using STRs?

  • Isolation of STR regions
  • Gel electrophoresis to separate DNA fragments
  • Comparison of STR patterns between individuals
  • Use of molecular probes for targeting specific sequences
• What are the main applications of personal genomics?

  • Health risk assessment
  • Ancestry tracing
  • Genetic trait analysis
  • Personalized medicine