Podcast
Questions and Answers
What is the term used to describe the process of adding family members to a genealogy tree in the context of genetic genealogy?
What is the term used to describe the process of adding family members to a genealogy tree in the context of genetic genealogy?
Which of the following methods are combined with DNA profiles in traditional genealogical research?
Which of the following methods are combined with DNA profiles in traditional genealogical research?
In the Golden State Killer case, what investigative method was used after narrowing down potential suspects?
In the Golden State Killer case, what investigative method was used after narrowing down potential suspects?
Which of the following was a physical description given by victims of the Golden State Killer?
Which of the following was a physical description given by victims of the Golden State Killer?
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What was the primary method used to capture the Golden State Killer?
What was the primary method used to capture the Golden State Killer?
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What type of biological material is collected from crime scenes for DNA analysis?
What type of biological material is collected from crime scenes for DNA analysis?
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What is the first step in the genetic profiling process?
What is the first step in the genetic profiling process?
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How does a genotyping chip function in DNA analysis?
How does a genotyping chip function in DNA analysis?
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Which of the following statements about Joseph DeAngelo is true?
Which of the following statements about Joseph DeAngelo is true?
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What role do fluorescent dyes play in genetic profiling?
What role do fluorescent dyes play in genetic profiling?
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How long did Joseph DeAngelo manage to evade law enforcement?
How long did Joseph DeAngelo manage to evade law enforcement?
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What is the purpose of a genetic profile created from DNA analysis?
What is the purpose of a genetic profile created from DNA analysis?
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What is the primary purpose of adding a perpetrator's DNA sequence to a public database?
What is the primary purpose of adding a perpetrator's DNA sequence to a public database?
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Which DNA testing companies are mentioned as contributors to genealogical databases?
Which DNA testing companies are mentioned as contributors to genealogical databases?
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How much DNA do first cousins typically share?
How much DNA do first cousins typically share?
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Why might it be unlikely to find many first or second cousins in the GEDmatch database?
Why might it be unlikely to find many first or second cousins in the GEDmatch database?
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Which group of relatives is typically most numerous in DNA databases?
Which group of relatives is typically most numerous in DNA databases?
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What percentage of DNA do second cousins share?
What percentage of DNA do second cousins share?
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What is significant about the article titled 'How Genetic Genealogy Helped Catch The Golden State Killer'?
What is significant about the article titled 'How Genetic Genealogy Helped Catch The Golden State Killer'?
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What is the main interest of law enforcement officials when analyzing DNA databases?
What is the main interest of law enforcement officials when analyzing DNA databases?
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Which factor reduces genetic similarity for each generation since sharing a common ancestor?
Which factor reduces genetic similarity for each generation since sharing a common ancestor?
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Who is the contributor of the article discussing the Golden State Killer?
Who is the contributor of the article discussing the Golden State Killer?
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In which year was the article 'How Genetic Genealogy Helped Catch The Golden State Killer' published?
In which year was the article 'How Genetic Genealogy Helped Catch The Golden State Killer' published?
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What does the article imply about the role of genetic genealogy in law enforcement?
What does the article imply about the role of genetic genealogy in law enforcement?
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According to the content provided, what overarching theme is present in the discussions featured in Forbes?
According to the content provided, what overarching theme is present in the discussions featured in Forbes?
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Which of the following articles seem to address personal finance issues?
Which of the following articles seem to address personal finance issues?
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Which topic does the article about 'Northern Lights' cover?
Which topic does the article about 'Northern Lights' cover?
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What event is hinted at in the section mentioning a $1.4 trillion earthquake in China?
What event is hinted at in the section mentioning a $1.4 trillion earthquake in China?
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What term does CeCe Moore use to describe the process of building a family tree by adding living relatives and connecting them to distant ancestors?
What term does CeCe Moore use to describe the process of building a family tree by adding living relatives and connecting them to distant ancestors?
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Which of the following investigative methods is used to narrow down potential suspects after identifying them through genetic genealogy?
Which of the following investigative methods is used to narrow down potential suspects after identifying them through genetic genealogy?
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Which modern technique is mentioned as a complementary method to traditional genealogy in building family trees?
Which modern technique is mentioned as a complementary method to traditional genealogy in building family trees?
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What physical characteristics were reported by victims of the Golden State Killer that matched Joseph James DeAngelo?
What physical characteristics were reported by victims of the Golden State Killer that matched Joseph James DeAngelo?
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What is the primary goal of combining traditional genealogy techniques with modern methods in suspect identification?
What is the primary goal of combining traditional genealogy techniques with modern methods in suspect identification?
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Study Notes
Golden State Killer
- Joseph DeAngelo, also known as the Golden State Killer, was arrested in April 2018.
- DeAngelo was convicted of 13 murders, 50 rapes, and numerous burglaries.
- DeAngelo was a former police officer who avoided detection for over 40 years.
Genetic Genealogy
- Genetic genealogy is a process that uses genetic data to identify potential suspects in criminal investigations.
- It uses a combination of DNA databases, family trees, and traditional investigative techniques.
Process of Genetic Genealogy
- Investigators obtain DNA samples from crime scenes, which are then sequenced to create a genetic profile.
- The profile is compared to DNA databases, such as GEDmatch, to identify possible relatives.
- GEDmatch is a public database where individuals upload their DNA data to learn about their ancestry.
Identifying Relatives
- The number of shared genetic variants is used to calculate the degree of relatedness between individuals.
- DeAngelo's genetic profile was compared to other profiles in the database.
- Law enforcement agencies focus on finding close relatives, such as second or third cousins, to build a family tree.
Building a Family Tree
- Traditional and modern genealogical techniques, such as birth and marriage certificates, historical documents, census data, social media, and DNA profiles, are used to build a family tree.
- This process, referred to as "reverse genealogy," traces relatives back to their ancestors.
Identifying the Suspect
- Investigative techniques, such as comparing physical features to eyewitness accounts and sketches, are used to narrow down the list of potential suspects.
- In the Golden State Killer case, DeAngelo's physical characteristics matched the descriptions provided by victims.
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Description
Test your knowledge on the infamous Golden State Killer, Joseph DeAngelo, and the innovative methods of genetic genealogy used to capture him. This quiz covers his crimes, the investigative processes, and the significance of DNA databases in solving cold cases. See how much you know about this pivotal moment in criminal history!
