Ch 11: Glencoe Biology Chapter 11: Complex Inheritance and Human Heredity

About This Chapter

The Complex Inheritance and Human Heredity chapter of this Glencoe Biology companion course helps students learn the essential biology lessons of genetics. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Complex Inheritance and Human Heredity textbook chapter.

How it works:

  • Identify the lessons in Glencoe Biology's Complex Inheritance and Human Heredity chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the human heredity topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, re-watch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • Pedigrees and population genetics
  • Penetrance and phenotypic variability
  • Types of genetic disorders
  • Codominance and incomplete dominance
  • Sex-linked and sex-limited traits
  • Epistasis
  • Polygenic traits
  • Genotype-environment interaction
  • Phenotypic plasticity
  • Segregation and independent assortment
  • Physical features of chromosomes
  • Nondisjunction and forms of aneuploidy

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11 Lessons in Chapter 11: Glencoe Biology Chapter 11: Complex Inheritance and Human Heredity
Test your knowledge with a 30-question chapter practice test
Human Genetics Research Methods: Pedigrees and Population Genetics

1. Human Genetics Research Methods: Pedigrees and Population Genetics

Have you ever wondered how people study human genetics? Do you know what a pedigree or a complex disease is? In this lesson you'll learn about some of the techniques that human geneticists use and what pedigrees and complex diseases have to do with human genetics.

Genetic Disorders: Penetrance & Phenotypic Variability

2. Genetic Disorders: Penetrance & Phenotypic Variability

Did you know that sometimes a dominant human genetic condition will skip a generation in a family? It does happen, and some dominant genetic conditions will also have a wide range of phenotypes, sometimes even within the same family. Learn more in this lesson about phenotypic variability!

Types of Genetic Disorders: Definitions & Symptoms

3. Types of Genetic Disorders: Definitions & Symptoms

Cystic fibrosis, Huntington's disease, Tay-Sachs disease, sickle cell disease, Down syndrome, and cancer all have something in common. They are all genetic disorders, and we will discuss why they may occur and what problems they might cause.

Exceptions to Simple Dominance: Codominance and Incomplete Dominance

4. 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.

Exceptions to Independent Assortment: Sex-Linked and Sex-Limited Traits

5. 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?

Epistasis: Definition & Examples

6. Epistasis: Definition & Examples

Labradors come in three different colors due to two different genes. In this lesson, find out how epistasis works as one phenotype is controlled by the products from two or more genes.

Polygenic Traits: Definition & Examples

7. Polygenic Traits: Definition & Examples

If variety is the spice of life, polygenic inheritance is one genetic mechanism giving us a continuous range of possibilities. In this lesson, learn how a polygenic trait, like height, can be controlled by multiple genes.

Genotype-Environment Interaction and Phenotypic Plasticity

8. Genotype-Environment Interaction and Phenotypic Plasticity

It's not just what's in your genes. In this lesson, we'll begin to explore how some phenotypes are influenced by the interaction between a genotype and the environment. Further, some organisms rely on phenotypic plasticity to change in response to the environmental changes.

The Chromosome Theory of Inheritance: Segregation and Independent Assortment

9. The Chromosome Theory of Inheritance: Segregation and Independent Assortment

Mendel proposed the law of segregation and the law of independent assortment to explain the inheritance behind his pea plant traits. A hundred years later, Boveri and Sutton developed the chromosome theory of inheritance, which stated that chromosomes were responsible for the heredity Mendel observed. Learn about these men and their ideas in this lesson.

Parts of a Chromosome & Their Roles

10. Parts of a Chromosome & Their Roles

Learn all about chromosomes, including the different parts of a chromosome and the types of chromosomes in diploid organisms like humans. Learn the vocab used with chromosomes.

Nondisjunction & Aneuploidy: Definition & Examples

11. Nondisjunction & Aneuploidy: Definition & Examples

Learn why proper chromosome segregation is essential during meiosis. We'll see how having an extra chromosome can lead to Down Syndrome and also examine the consequences of having too few chromosomes. Disruptions to the delicate balance of cell division can have far-reaching effects.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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