Podcast
Questions and Answers
Mitochondrial DNA is used for identifying paternal lineage.
Mitochondrial DNA is used for identifying paternal lineage.
False
RFLP analysis is used to amplify DNA samples.
RFLP analysis is used to amplify DNA samples.
False
STR analysis is used to identify individuals and determine their involvement in a crime.
STR analysis is used to identify individuals and determine their involvement in a crime.
True
Serological evidence refers to the analysis of fingerprints.
Serological evidence refers to the analysis of fingerprints.
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ABO blood typing is used to determine an individual's blood type.
ABO blood typing is used to determine an individual's blood type.
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DNA evidence can be collected from hair, semen, and tissue.
DNA evidence can be collected from hair, semen, and tissue.
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Enzyme typing is used to analyze DNA fragments.
Enzyme typing is used to analyze DNA fragments.
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Nuclear DNA is found in the mitochondria.
Nuclear DNA is found in the mitochondria.
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PCR is used to analyze DNA fragments.
PCR is used to analyze DNA fragments.
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DNA analysis is used to solve cold cases.
DNA analysis is used to solve cold cases.
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Study Notes
DNA Evidence
- Definition: DNA (Deoxyribonucleic acid) is a unique genetic material found in every cell of an individual's body.
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Types of DNA evidence:
- Nuclear DNA: found in the nucleus of cells, used for identifying individuals.
- Mitochondrial DNA: found in the mitochondria, used for identifying maternal lineage.
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Collection methods:
- Blood, saliva, skin cells, and other bodily fluids.
- Evidence from crime scenes, such as hair, semen, and tissue.
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Analysis techniques:
- PCR (Polymerase Chain Reaction): amplifies DNA samples.
- RFLP (Restriction Fragment Length Polymorphism): analyzes DNA fragments.
- STR (Short Tandem Repeat): analyzes repetitive DNA sequences.
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Uses in criminology:
- Identifying suspects and linking them to crime scenes.
- Excluding individuals from suspicion.
- Solving cold cases.
Serological Evidence
- Definition: Serological evidence refers to the analysis of bodily fluids, such as blood, semen, and saliva, to identify individuals and determine their involvement in a crime.
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Types of serological evidence:
- Bloodstains: analyzed for DNA, blood type, and other characteristics.
- Semen: analyzed for DNA and other characteristics.
- Saliva: analyzed for DNA and other characteristics.
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Collection methods:
- Swabbing surfaces and objects.
- Collecting liquid samples.
-
Analysis techniques:
- ABO blood typing: determines an individual's blood type.
- Enzyme typing: analyzes enzymes in bodily fluids.
- DNA analysis: uses techniques such as PCR and STR.
-
Uses in criminology:
- Identifying suspects and linking them to crime scenes.
- Determining the sequence of events at a crime scene.
- Providing evidence in court proceedings.
DNA Evidence
- DNA is a unique genetic material found in every cell of an individual's body.
Types of DNA
- Nuclear DNA: found in the nucleus of cells, used for identifying individuals.
- Mitochondrial DNA: found in the mitochondria, used for identifying maternal lineage.
Collection of DNA Evidence
- Blood, saliva, skin cells, and other bodily fluids.
- Evidence from crime scenes, such as hair, semen, and tissue.
DNA Analysis Techniques
- PCR (Polymerase Chain Reaction): amplifies DNA samples.
- RFLP (Restriction Fragment Length Polymorphism): analyzes DNA fragments.
- STR (Short Tandem Repeat): analyzes repetitive DNA sequences.
Uses of DNA Evidence in Criminology
- Identifying suspects and linking them to crime scenes.
- Excluding individuals from suspicion.
- Solving cold cases.
Serological Evidence
- Refers to the analysis of bodily fluids to identify individuals and determine their involvement in a crime.
Types of Serological Evidence
- Bloodstains: analyzed for DNA, blood type, and other characteristics.
- Semen: analyzed for DNA and other characteristics.
- Saliva: analyzed for DNA and other characteristics.
Collection of Serological Evidence
- Swabbing surfaces and objects.
- Collecting liquid samples.
Analysis of Serological Evidence
- ABO blood typing: determines an individual's blood type.
- Enzyme typing: analyzes enzymes in bodily fluids.
- DNA analysis: uses techniques such as PCR and STR.
Uses of Serological Evidence in Criminology
- Identifying suspects and linking them to crime scenes.
- Determining the sequence of events at a crime scene.
- Providing evidence in court proceedings.
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Description
Understand the concept of DNA evidence, types of DNA, collection methods, and analysis techniques used in forensic science. Test your knowledge on DNA identification and its applications.
