About This Chapter
Basics of Gene Mutations - Chapter Summary
What are the effects of genetic mutations on DNA? What is the cause of these mutations? These are among the topics you can expect to explore when you refer to these informative lessons. Each video contains term definitions, illustrations and detailed examples to support your full understanding of the material being discussed. Once you have completed your review of this chapter, you should possess the following abilities:
- Identify different types of mutations
- Relate basic information about point mutations
- Explain the effects of mutations on protein
- Discuss the causes of mutations and whether all mutations are bad
- Define and provide examples of frameshift mutations
- Detail what point mutations are and what diseases they cause
Track your progress through this chapter using your Dashboard and take self-assessment quizzes to determine how much you have retained from one lesson before moving on to the next. Lessons are conveniently accessible from any device, at any time, and are taught by instructors with experience in teaching biology, physical science and high school science.
1. 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.
2. 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.
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. 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.
5. Point Mutations in DNA: Types, Diseases & Examples
Did you know that very small changes in DNA sequences called point mutations can have huge impacts on the body? Learn about different types of point mutations and a few of the diseases they can cause in this lesson.
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