About This Chapter
Genetic Variation & Engineering - Chapter Summary
With our readable chapter, you can study genetic variation and engineering with ease and at your own pace. Lessons on genetic variation, genetic abnormalities, and mutagens and mutations are included. You'll also study DNA mutations, RNA mutations and the effects of mutations on protein function. After completing this chapter, you should be ready to:
- Describe the causes of point mutations along with examples
- Detail the effects of frameshift mutations
- Outline haplosufficient genes and the inheritance patterns of lethal alleles
- Provide examples of genetic engineering
- Describe the history of biotechnology
- Explain some of the applications of biotechnology in medicine and genetics
- Identify the benefits of the human genome project
- Explore the ethical considerations of genetic research, technology and therapy
You don't need to worry about understanding challenging topics when you have the help of our interesting and thorough learning materials. For help with test prep, the lesson quizzes and chapter test assist you in assessing your comprehension level and identifying any subject areas that aren't clear. Reach out to one of our instructors through the Dashboard if you have any questions.
1. What Is Genetic Variation? - Sources, Definition & Types
Natural selection is the process that drives evolution, but what drives natural selection? Genetic variation increases the genetic diversity in and among populations, allowing for new traits to become more or less prominent in the gene pool.
2. Genetic Abnormalities in Human Growth and Development
What are mutations and other chromosome abnormalities? How can these abnormalities affect human development? What are some common genetic disorders and their causes? Learn the answers to these questions in this lesson.
3. Mutagens: How the Environment Affects Mutation Rates
What causes mutations to occur in living things? How do we avoid mutations? Are mutations always bad? Discover answers to these questions and more in this lesson on mutagens.
4. Mutations: When DNA Is Copied Wrong
In this lesson, we will learn how mutations, or errors in DNA, come about, what kinds of effects they may have, and how they can impact populations as a whole.
5. DNA Mutations vs. RNA Mutations
In this lesson we'll be learning what mutations are and how mutations in DNA differ from mutations in RNA. We'll explain why some mutations are more detrimental than others and how mutations create changes in the organism.
6. Effects of Mutations on Protein Function: Missense, Nonsense, and Silent Mutations
How does a tiny point mutation change the way a protein works? What are the consequences of base substitutions? In this lesson, we'll use an imaginary creature to explore missense, nonsense and silent mutations.
7. What is a Point Mutation? - Definition, Causes & Types
What are genetic mutations? How do they affect our DNA? This lesson covers the basics of point mutations and provides simple examples of different mutation types.
8. Effects of Frameshift Mutations: Definitions and Examples
What is a frameshift in genetic translation? How can a frameshift mutation change a protein? In this lesson, learn about the codon reading frame and how frameshift mutations cause serious problems for polypeptide formation.
9. Haplosufficient Genes and Inheritance Patterns of Lethal Alleles
Have you ever wondered why some genetic conditions are recessive while others are dominant? In this lesson, you'll learn about haplosufficiency and how it can sometimes determine whether a genetic condition is dominant or recessive.
10. What is Genetic Engineering? - Definition and Examples
How do we make the insulin used by diabetic patients? In this lesson, you'll learn the basics of how genetic engineering can be used to transform a bacterial host cell into a genetically-modified organism that produces human insulin.
11. What is Biotechnology? - Definition, History & Examples
Biotechnology is a broad category and includes some surprising concepts. Learn what practices and disciplines fall under this exciting and expanding classification.
12. Biotechnology Applications in Medicine & Genetics
The word DNA is most commonly associated with criminal investigations but the applications of genetics run well beyond this one field as this lesson explains. Test your knowledge by completing the quiz at the end of the lesson.
13. What is the Human Genome Project? - Definition, Purpose & Benefits
We often hear about scientific research being done but may not truly understand what that entails. This is not one of those times. The Human Genome Project has allowed many breakthroughs in genetic research that affect us in a very tangible way, right here, right now.
14. Ethical Considerations of Genetic Research, Therapy & Technology
In this lesson, we will define important concepts in genetic research, including genomes, DNA, gene therapy, cloning, and genetic engineering. We will discuss ethical considerations of genetic research, therapy, and technology.
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Other chapters within the CSET Science Subtest II Life Sciences (217): Practice & Study Guide course
- Principles of Cell Structure & Function
- The Organization & Function of Multicellular Organisms
- The Cell Cycle, Mitosis & Meoisis
- Matter & Energy Flow in Organisms
- Interdependent Relationships in Ecosystems
- Cycles of Matter & Energy Transfer in Ecosystems
- Biodiversity & Sustainability
- DNA & Gene Expression
- Genetics & Inheritance
- Overview of Biological Evolution on Earth
- The Role of Natural Selection in Biological Evolution
- Adaptation in Biological Evolution
- CSET Science Subtest 2 Life Sciences Flashcards