Ch 4: ASVAB: Genetics

About This Chapter

Become more familiar with several issues concerning genetics with this chapter. Our professional instructors guide you through lessons using text and video to prepare you for the ASVAB.

ASVAB: Genetics - Chapter Summary

Properties of alleles and the exceptions to simple dominance including codominance and incomplete dominance make up some of the specific focuses of this chapter. The short, fun video lessons cover that subject matter along with the following for you to study in preparation for the ASVAB exam:

  • Polygenic traits
  • Models for DNA replication
  • Protein synthesis and the central dogma
  • Transcription of messenger RNA

Some of the major points in the text lessons are written in bold print. You'll also find some information on related courses and supplementary text lessons.

Objectives of the ASVAB: Genetics Chapter

The ASVAB is used to gauge your knowledge across several areas to get an idea of your fit for the military according to its standards. This chapter's content is geared toward the General Science subtest on the ASVAB. This subtest has 16 multiple-choice questions on the computerized version and 25 on the paper version. There are practice quizzes available to you in this chapter that will give you some helpful practice with the material.

9 Lessons in Chapter 4: ASVAB: 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.

Exceptions to Simple Dominance: Codominance and Incomplete Dominance

3. 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.

Polygenic Traits: Definition & Examples

4. 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.

What Is DNA Replication? - Conservative, Semi-Conservative & Dispersive Models

5. What Is DNA Replication? - Conservative, Semi-Conservative & Dispersive Models

How do we know that DNA replication is semi-conservative? How do we know it's not conservative or dispersive? Let's follow the famous experiment by Meselson and Stahl to find out!

DNA Replication: The Leading Strand and DNA Polymerase Activities

6. DNA Replication: The Leading Strand and DNA Polymerase Activities

How does replication occur in the antiparallel DNA molecule? In this lesson, explore the significance of the leading and lagging strands, and learn how Okazaki fragments and RNA ligase make DNA replication possible.

Protein Synthesis in the Cell and the Central Dogma

7. Protein Synthesis in the Cell and the Central Dogma

Learn the story of the central dogma and how it relates to protein synthesis. We'll use a simple analogy to explore the roles of transcription and translation in building protein from the DNA code. In this lesson, we'll also introduce the concept of a gene.

Transcription of Messenger RNA (mRNA) from DNA

8. Transcription of Messenger RNA (mRNA) from DNA

In this lesson, you will gain a thorough understanding of how transcription works. We will investigate how DNA is transcribed into RNA with the help of a promoter and RNA polymerase. Learn the purpose of messenger RNA and explore the three phases of transcription.

Macrophages: Definition, Function & Types

9. Macrophages: Definition, Function & Types

A macrophage is a type of white blood cell that cleans the body of unwanted microscopic particles, such as bacteria and dead cells. Learn more about this important cell and take a quiz at the end.

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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