Ch 15: DNA Sequencing & Replication

About This Chapter

This overview of DNA sequencing and replication will boost your understanding of topics like complementary base pairing, nucleotides, and mutations. These lessons will assist you with getting prepared to take an exam or engage in a class discussion.

DNA Sequencing & Replication - Chapter Summary

In this chapter on DNA sequencing and replication, engaging lessons cover subjects like the impact of cytoplasmic and mitochondrial inheritance. You will also get an understanding of how DNA molecules are composed of different nucleotides and how ligase is used to engineer recombinant DNA. After completing the chapter, you should be positioned to do the following:

  • Discuss the structure of DNA
  • Explain the Watson & Crick model of DNA
  • Detail how DNA sequencing allows us to determine the genes that make up a person
  • Define complementary base pairing
  • List the components and structure of nucleotides
  • Describe how DNA replicates
  • Recall how errors in DNA occur
  • Recognize how restriction enzymes played a role in the birth of genetic engineering

Our instructors are skilled at helping you absorb the concepts presented on DNA sequencing and replication. A short quiz is available to test your knowledge after each lesson, and the quizzes can be printed for use as worksheets. For video lessons, the quizzes link back to specific topics in the video, which allows you to review particular topics again with just one click.

10 Lessons in Chapter 15: DNA Sequencing & Replication
Test your knowledge with a 30-question chapter practice test
What is DNA? - Structure, Overview

1. What is DNA? - Structure, Overview

This lesson will explore the race to find the structure of the DNA molecule, the parts of that structure and how they fit together, and how this knowledge has been used to advance mankind.

Watson & Crick Model of DNA

2. Watson & Crick Model of DNA

This lesson will review the Watson & Crick model of DNA and how it applies to our understanding of genetic material. By the end you will understand what Watson and Crick discovered and explain what its structure looks like.

DNA Sequencing and the Human Genome

3. DNA Sequencing and the Human Genome

DNA sequencing allows us to determine the exact genes that make up an individual. It can be used to screen for certain diseases and in crime scene analysis. Learn more about it in this lesson.

Complementary Base Pairing: Definition & Explanation

4. Complementary Base Pairing: Definition & Explanation

Explore the composition and structure of DNA molecules. Learn how DNA molecules are composed of four different types of nucleotides that pair with each other in a very specific, complementary manner.

Nucleotides: Structure & Components

5. Nucleotides: Structure & Components

Nucleotides have a sugar, phosphate, and nitrogenous base. Learn how these simple components allow nucleotides to join together to make polymers like DNA and RNA, as well as energy carrying molecules like ATP.

How Does DNA Replicate?

6. How Does DNA Replicate?

In this lesson, we will learn why DNA replicates as well as how. We'll also learn about the rates of replication and how DNA proofreads itself. After watching the lesson, you can complete a short quiz to test your knowledge.

Cytoplasmic & Mitochondrial Inheritance: Types & Impacts

7. Cytoplasmic & Mitochondrial Inheritance: Types & Impacts

Everyone knows that you inherit genetic information from your parents, but did you know there are multiple ways for this to occur? In this lesson, we'll look at extranuclear inheritance and see what this means for passing on DNA.

Mutations: When DNA Is Copied Wrong

8. Mutations: When DNA Is Copied Wrong

In this lesson, we will learn how mutations, or errors in DNA, come about, what kinds of effects they may have, and how they can impact populations as a whole.

Restriction Enzymes: Function and Definition

9. Restriction Enzymes: Function and Definition

Restriction enzymes played a critical role in the advent of genetic engineering. In this lesson, you will learn what role restriction enzymes play in creating recombinant DNA.

How Ligase is Used to Engineer Recombinant DNA

10. How Ligase is Used to Engineer Recombinant DNA

DNA ligase makes recombinant DNA technology possible. In this lesson, you will learn how new versions of genes can be designed for experiments in novel host organisms using DNA ligase.

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.
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