About This Chapter
Understanding Principles of Heredity - Chapter Summary
If you seek to better understand the principles of heredity, this chapter can help. Top instructors have designed informative lessons you can review to study properties of alleles, genetic engineering, gene therapy, gene-environment interaction and more. Upon completion of this chapter, you will be able to:
- Define and describe the structure of a gene
- Differentiate between asexual and sexual reproduction
- Compare and contrast genotypes and phenotypes
- Describe Mendel's first law and discuss its application
- Discuss Mendel's second law
- Exhibit knowledge of Mendel's dihybrid cross example
- Explain exceptions to simple dominance and independent assortment
- List and discuss practical applications of DNA technology
Take control of your studying process by utilizing the resources in this chapter in any manner that you wish. Select any lessons to study and find out how well you understand their contents by taking accompanying quizzes. Clarify details you don't fully comprehend by submitting your questions to our experts via the Dashboard. These resources are accessible 24 hours a day via any computer, smartphone or tablet with an Internet connection.
1. What Is a Gene? - Definition & Structure
Genes are little codes found in our cells that make up who we are. This lesson covers where genes are located, how we get our genes, and the functions of genes.
2. Gene-Environment Interaction
The following lesson explores how genes and a person's environment influence behavior and outward expression of traits. A short quiz will follow the lesson to check your understanding of this timely topic.
3. Asexual vs. Sexual Reproduction: Comparison & Characteristics
Did you know that some organisms can reproduce without a mate? Check out this video lesson on asexual versus sexual reproduction to discover the different ways organisms can reproduce and the main differences between mitosis and meiosis.
4. What are Genotypes? - Definition & Examples
In this lesson, you will learn about what genotypes are, where they come from and how they play a major role in determining how your body works and what you look like.
5. What Is a Phenotype? - Definition & Example
Do you have blue eyes or brown eyes, or something else, like hazel? That's your phenotype for eye color. Discover examples of phenotypes, and how they are (partly) determined by your genes.
6. Properties of Alleles
What is a dominant phenotype and how will it affect Adrian's flying hamster research? Tune in as he studies homozygous and heterozygous genotypes and the phenotypes they produce.
7. Mendel's First Law: The Law of Segregation
Breaking up is a hard thing to do, but homologous chromosomes always go their separate way. What effect does chromosome segregation have on genetics? We look once more to Adrian's flying hamsters for answers.
8. Application of Mendel's First Law
Hollywood Squares? No, it's Punnett Squares! Those wacky diagrams are a geneticist's best friend. See how they turn geneticists into soothsayers, predicting the genotypic and phenotypic future.
9. Mendel's Second Law: The Law of Independent Assortment
Understanding how Mendel's law of independent assortment describes inheritance of genes is as easy as flipping a coin. Grab a few coins, cue up the video and see how.
10. Mendel's Dihybrid Cross Example: Practice & Ratio
Oh no! Twice the genes and sixteen genotypes - a dihybrid cross seems overwhelming to understand. Never fear though, Punnett squares will save the day!
11. Exceptions to Simple Dominance: Codominance and Incomplete Dominance
Have you ever wondered what it means if someone is a universal donor or acceptor of blood? See how genetic interactions play a key role in this trait.
12. Exceptions to Independent Assortment: Sex-Linked and Sex-Limited Traits
More men are color blind compared women. But often, not every brother, cousin or uncle in a family tree is color blind. Why not? How can genetics explain this seemingly complex inheritance pattern?
13. 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.
14. What is Gene Therapy? - Definition, History Pros, Cons & Examples
Learn how gene therapy is used to treat disease, the history of the treatment and its trials, as well as the pros and cons associated with this controversial new technique.
15. Practical Applications of DNA Technology
DNA technology is a field that has many applications for our everyday lives. In this video lesson, you will learn about some of the important contributions of DNA technology to industries such as medicine, agriculture and criminal investigation.
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Other chapters within the CSET Science Subtest I - General Science (215): Practice & Study Guide course
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- Analysis & Conclusions in Scientific Investigations
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- Overview of Nuclear Energy
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- Graphs of Motion
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- Electricity & Magnetism Fundamentals
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- Overview of Plant Biology
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- Understanding Basics of Ecology
- Overview of Genetics & DNA
- Understanding Basics of Evolution
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- Overview of Astronomy
- Earth's Materials, Systems & Surface Processes
- Overview of Plate Tectonics
- Basics of Weather & Climate
- Energy Transfer & Climate Change
- Natural Resources & Hazards
- CSET General Science Subtest 1 Flashcards