Copyright

Ch 38: General Science: Basic Genetics

About This Chapter

As you study for the AEPA General Science exam, be sure to include this chapter to improve your knowledge of Mendel's laws, genetic principles and genetic disorders.

AEPA General Science: Basic Genetics - Chapter Summary

This chapter has been assembled to help you review the basic principles and laws of genetics. Watch these lesson videos to learn more about Mendel's laws, the roles of alleles and chromosomes, mutations and genetic disorders. These lesson videos are mobile-device friendly and taught by an expert instructor so that you have a versatile and effective way of reviewing:

  • Properties of alleles
  • Mendel's first and second laws
  • Dominance, codominance and incomplete dominance
  • Sex linked and sex limited traits
  • Chromosomal linkage
  • Human genetics
  • Random mutation and genetic variability
  • Genetic abnormalities and genetic disorders

Lively video lessons and written transcripts comprise this chapter. Follow along as expert instructors outline the above topics in a conversational manner. Short quizzes follow each of these lessons. Use them to test your comprehension of basic genetics. Worksheets containing your quiz results can be printed out so that you have a handy paper resource that you can refer to even when you're on the go.

AEPA General Science: Basic Genetics Chapter Objectives

The AEPA General Science is a computer administered teachers certification exam composed of 150 multiple-choice questions and administered in a three-hour block of time. You are likely to see that one-quarter of this exam will cover topics from the life sciences. Be prepared for some of the questions in this domain to ask you about principles related to genetics.

13 Lessons in Chapter 38: General Science: Basic Genetics
Test your knowledge with a 30-question chapter practice test
Genetics: Heredity, Traits & Chromosomes

1. Genetics: Heredity, Traits & Chromosomes

We view manipulation of genes in our crops and livestock as a recent development. Yet, man has been manipulating the genetic makeup of his food for thousands of years through cultivation and breeding. This lesson will begin to help you understand how genetics works.

Properties of Alleles

2. 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.

Mendel's First Law: The Law of Segregation

3. 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.

Application of Mendel's First Law

4. 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.

Mendel's Second Law: The Law of Independent Assortment

5. 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.

Mendel's Dihybrid Cross Example: Practice & Ratio

6. 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!

Exceptions to Simple Dominance: Codominance and Incomplete Dominance

7. 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

8. 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?

Crossing Over & Gene Linkage: Definition, Importance & Results

9. Crossing Over & Gene Linkage: Definition, Importance & Results

During this latest development of his flying hamster experiments, Adrian must learn about linked genes and recombinant chromosomes to unlock the mystery of the fire-breathing hamster. In this lesson, you'll look at another exception to Mendel's law of independent assortment.

Human Genetics: Multifactorial Traits & Model Organisms

10. Human Genetics: Multifactorial Traits & Model Organisms

How do we study human genetics when most traits arise from multiple genes? It's certainly more complicated that drawing a simple Punnett square. Never fear, for model organisms are here!

Genetic Variability and Random Mutation

11. Genetic Variability and Random Mutation

Evolution is driven by variation among populations. The amount of variability determines how well a population can adapt to environmental changes, while random mutations can provide new variations that help a population adapt to unexpected changes.

Genetic Abnormalities in Human Growth and Development

12. 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.

What are Genetic Disorders? - Definitions & Descriptions

13. What are Genetic Disorders? - Definitions & Descriptions

This lesson defines genetic disorders and explores three main types of genetic disorders, including monogenetic disorders, chromosome disorders, and multifactorial inheritance disorders. You'll learn about genes, chromosomes, DNA, and much more!

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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

Other chapters within the AEPA General Science (NT311): Practice & Study Guide course

Support