Podcast
Questions and Answers
What is the correct expansion of the acronym DNA?
What is the correct expansion of the acronym DNA?
- Deoxyribonucleic Acid (correct)
- Denaturedribonucleic Acid
- Deoxypolynitrogenous Acid
- Desaturated Nuclear Adenosine
Which statement BEST describes the function of DNA?
Which statement BEST describes the function of DNA?
- An unique impression left behind by criminals at crime scenes
- A unique subcellular component found in the ribosomes used for protein synthesis and identifying individuals
- A molecule unique to each person containing instructions for building proteins (correct)
- A protein unique to each person that affects the rate of chemical reactions
What is the correct sequence for DNA analysis steps after collecting a sample?
What is the correct sequence for DNA analysis steps after collecting a sample?
- DNA extraction → DNA fingerprinting → DNA amplification
- DNA fingerprinting → DNA extraction → DNA amplification
- DNA amplification → DNA extraction → DNA fingerprinting
- DNA extraction → DNA amplification → DNA fingerprinting (correct)
After receiving a DNA sample from a crime scene, what is the initial step a technician takes to extract the DNA?
After receiving a DNA sample from a crime scene, what is the initial step a technician takes to extract the DNA?
Which of the following sequences accurately depicts the steps in Polymerase Chain Reaction (PCR)?
Which of the following sequences accurately depicts the steps in Polymerase Chain Reaction (PCR)?
A forensic lab obtains a severely degraded DNA sample. How does PCR assist in analyzing this sample?
A forensic lab obtains a severely degraded DNA sample. How does PCR assist in analyzing this sample?
Why is DNA considered individual evidence in forensic science?
Why is DNA considered individual evidence in forensic science?
Within the structure of DNA, what pairing relationship exists between nucleotide bases?
Within the structure of DNA, what pairing relationship exists between nucleotide bases?
What is the main purpose of using CODIS in forensic science?
What is the main purpose of using CODIS in forensic science?
Given a gel electrophoresis image showing DNA bands from a crime scene and three suspects, how would you determine a match?
Given a gel electrophoresis image showing DNA bands from a crime scene and three suspects, how would you determine a match?
Flashcards
What does DNA stand for?
What does DNA stand for?
Deoxyribonucleic Acid: A molecule that carries genetic instructions for all living organisms.
What BEST describes DNA?
What BEST describes DNA?
A molecule unique to each person containing instructions for building proteins.
Correct order of DNA analysis steps?
Correct order of DNA analysis steps?
DNA extraction → DNA amplification → DNA fingerprinting.
First step to extract DNA?
First step to extract DNA?
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Correct order of PCR steps?
Correct order of PCR steps?
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How can PCR help analyze degraded DNA?
How can PCR help analyze degraded DNA?
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Why is DNA individual evidence?
Why is DNA individual evidence?
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Relationship between nucleotide bases?
Relationship between nucleotide bases?
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What is CODIS primarily used for?
What is CODIS primarily used for?
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Based on the gel image, which statement is most accurate?
Based on the gel image, which statement is most accurate?
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Study Notes
- DNA stands for Deoxyribonucleic Acid.
- DNA is a molecule unique to each person, containing instructions for building proteins.
- The correct order of the steps of DNA analysis is DNA extraction → DNA amplification → DNA fingerprinting.
- To extract DNA, laboratory technicians first use physical and chemical means to break down the cell and nuclear membranes after receiving the sample.
- The correct order of the steps of PCR is Denaturing → Annealing → Extending.
- PCR can help in analyzing a severely degraded DNA sample because it can amplify even small fragments of DNA, making analysis possible.
- DNA is considered individual evidence in forensic science because it can be linked to a specific person.
- In DNA structure, Adenine (A) pairs with Thymine (T), and Guanine (G) pairs with Cytosine (C).
- CODIS is primarily used in forensic science to serve as a national DNA database.
- Based on the gel image, suspect 2's DNA completely matches the crime scene DNA, confirming their involvement.
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