Podcast
Questions and Answers
Which cellular component typically houses DNA?
Which cellular component typically houses DNA?
- Ribosome
- Nucleus (correct)
- Cytoplasm
- Mitochondria
Mature red blood cells (RBCs) are unique because they lack which of the following?
Mature red blood cells (RBCs) are unique because they lack which of the following?
- Hemoglobin
- Cell membrane
- Mitochondria
- Nucleus (correct)
From which of the following sources can DNA be extracted for analysis?
From which of the following sources can DNA be extracted for analysis?
- Hair and Semen (correct)
- Blood only
- Epithelial cells only
- Saliva only
What is the primary function of DNA?
What is the primary function of DNA?
If a sample from a crime scene yields no DNA, which biological material was likely NOT present?
If a sample from a crime scene yields no DNA, which biological material was likely NOT present?
Which scenario would present a challenge for DNA extraction?
Which scenario would present a challenge for DNA extraction?
The genetic blueprint of an organism is primarily encoded in which molecule?
The genetic blueprint of an organism is primarily encoded in which molecule?
In forensic science, why is DNA evidence considered so valuable?
In forensic science, why is DNA evidence considered so valuable?
Which advancement would LEAST improve DNA extraction from a crime scene?
Which advancement would LEAST improve DNA extraction from a crime scene?
Which of the following biological materials found at a crime scene would likely yield the MOST usable DNA?
Which of the following biological materials found at a crime scene would likely yield the MOST usable DNA?
Comparing DNA found at a crime scene to a suspect's DNA relies on what principle?
Comparing DNA found at a crime scene to a suspect's DNA relies on what principle?
What distinguishes DNA from other types of molecules?
What distinguishes DNA from other types of molecules?
A researcher is studying a new type of cell and observes that it lacks a nucleus. Which of the following implications does this have for DNA?
A researcher is studying a new type of cell and observes that it lacks a nucleus. Which of the following implications does this have for DNA?
In the process of DNA extraction, why is it important to avoid contamination?
In the process of DNA extraction, why is it important to avoid contamination?
Which characteristic of DNA within cells supports its role as a genetic blueprint?
Which characteristic of DNA within cells supports its role as a genetic blueprint?
How does the presence of DNA relate to the ability of forensic scientists to identify individuals from biological samples?
How does the presence of DNA relate to the ability of forensic scientists to identify individuals from biological samples?
What would be the MOST significant limitation in using hair samples without follicles for DNA analysis?
What would be the MOST significant limitation in using hair samples without follicles for DNA analysis?
Why is it easier to extract DNA from blood when compared to other tissues?
Why is it easier to extract DNA from blood when compared to other tissues?
Which process would LEAST likely lead to successful DNA extraction at a crime scene?
Which process would LEAST likely lead to successful DNA extraction at a crime scene?
What ethical consideration is MOST relevant to the forensic use of DNA?
What ethical consideration is MOST relevant to the forensic use of DNA?
Flashcards
What is DNA?
What is DNA?
Genetic blueprint that contains instructions to create all characteristics of an organism.
Where is DNA located?
Where is DNA located?
DNA is found within the nuclei of all types of cells in the body, with the exception of mature red blood cells (RBCs).
Sources of DNA at a crime scene?
Sources of DNA at a crime scene?
DNA can be extracted from various biological materials found at a crime scene, including blood, skin, bone, semen, and hair.
Study Notes
- DNA, or deoxyribonucleic acid, is the genetic blueprint that dictates the production of all characteristics of an organism.
- It is located within the nuclei of all cells, with the exception of mature red blood cells (RBCs).
- Nucleic acid can be extracted from biological materials such as blood, skin, bone, semen, and hair, which can be crucial in crime scene investigations.
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