About This Chapter
DNA & Forensic Evidence - Chapter Summary
This chapter is a quick and easy way to get up to speed on DNA and forensic evidence. Our expert instructors discuss topics like the equipment required to perform agarose gel electrophoresis and the use of forensic evidence to solve crimes. After completing the chapter, you should be able to:
- List different types of forensic evidence
- Define DNA and DNA sequencing
- Recall how agarose gel electrophoresis works
- Provide examples of destructive and non-destructive testing
- Explain why chromatography is useful to forensic scientists
- Discuss how scientists use gas chromatography and mass spectrometry
- Recount different spectroscopic techniques
- Describe methods for identifying chemicals in a solution
Our instructors assist you with quickly grasping the concepts presented. A brief quiz is available to test your understanding of each lesson, and the quizzes can be printed for use as an offline study tool. The quizzes link back to the related points in the lesson, so if you get a question wrong you can review that topic with just one click.
1. Forensic Evidence: Types, Definition & Cases
The term 'forensic' actually means relating to law and science. In this lesson, we'll review different types of forensic evidence. We'll also look at real world cases where forensic evidence was used to solve crimes.
2. What is DNA?
In this lesson, we will learn what DNA is, what its characteristics and functions are, even where it is located and what information it contains. We'll also learn how the double helix is created. Find out more.
3. DNA Sequencing: Definition, Methods & Applications
DNA sequencing allows scientists to know the exact message coded in DNA. In this lesson, we'll talk about how DNA replication is the basis for sequencing, how scientists do DNA replication in the lab, and important uses for it in research and everyday life.
4. What is Agarose Gel Electrophoresis?
Agarose gel electrophoresis plays a key role in genetic engineering experiments. In this lesson, you'll learn what agarose is and how electrophoresis works. You'll also discover the use of agarose in this procedure.
5. Agarose Gel Electrophoresis: Equipment & Procedure
This lesson will review the concepts and mechanisms of agarose gel electrophoresis. It will also summarize the equipment needed to perform the procedure for DNA analysis.
6. Agarose Gel Electrophoresis: Results Analysis
Gel electrophoresis is used to analyze DNA restriction digest and ligation experiments. In this lesson, you will learn how to use a DNA ladder to interpret experimental results.
7. Destructive & Non-Destructive Testing: Definition, Function & Examples
In this lesson, you'll learn about why destructive tests are typically not desired and how non-destructive tests can be used instead. Then after learning this you can test your knowledge with a quiz!
8. Chromatography in Forensic Science
In this lesson, we'll discuss what chromatography is and why it's useful to forensic scientists. We'll focus on thin-layer chromatography and how it works, but we'll also mention some other types of chromatography.
9. Gas Chromatography & Mass Spectrometry
Scientists interested in identifying the individual chemicals in a mixture use an instrumental method called gas chromatography mass spectrometry or GC-MS. Continue reading to learn about the ins and outs of this fascinating chemistry technique.
10. Spectroscopy: Definition and Types
In this video lesson, we will introduce and discuss different spectroscopic techniques used by scientists in an analytical lab. We will understand the importance of these techniques and show how they can be employed in identification and analysis.
11. How to Identify Chemicals in Solution: Test Methods & Materials
Do you have a mysterious solution sitting around? Learn to identify it using one of the following methods: through precipitation, using conduction, using a flame test, using an acid-base indicator and observing the color of the solution.
Earning College Credit
Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the HSC Chemistry: Exam Prep & Syllabus course
- Scientific Experimentation in Chemistry
- Chemistry Lab Equipment & Safety
- Measurement & Data in Chemistry
- Scientific Research in Chemistry
- Overview of the Chemistry of the Earth
- Atoms & Molecules in Chemistry
- Properties of Earth Materials
- Metals Overview
- The Periodic Table Overview
- Measuring Amounts of Reactants
- Water in Chemistry
- Solubility of Water
- Specific Heat of Water
- Carbon & Energy
- Combustion Reactions & Energy
- Fossil Fuel Products
- Understanding Biomass Research
- Overview of Renewable Ethanol
- Electrochemistry & Redox Reactions
- Radioactivity in Chemistry
- Indicators in the Acidic Environment
- Understanding Acidic Oxides
- Overview of Acids
- Acid & Base Definitions
- Principles of Esterification
- Chemical Monitoring & Management
- Chemical Monitoring in the Environment
- Industrial Chemistry Overview
- Shipwrecks, Corrosion & Conservation
- Biochemistry of Movement
- Biochemical Reactions in Muscle Contractions
- The Chemistry of Art
- Atomic Structure & Transition Elements
- Forensic Chemistry Overview
- HSC Chemistry Flashcards