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Ch 30: Principles of Genetics

About This Chapter

Watch the fun video lessons in this self-paced chapter to improve your knowledge of various genetic principles. If you're preparing for a test, take our mini quizzes and practice exam to check your comprehension and gauge your readiness to excel.

Principles of Genetics - Chapter Summary

If you need help studying the principles of genetics, you've reached the right place! This chapter takes a close look at DNA replication, genetic engineering, the Punnett square and other related concepts. After completing this chapter, you will be able to:

  • Discuss genetics concepts like heredity, traits and chromosomes
  • Exhibit knowledge of Mendel's first and second laws
  • Define and share an example of the Punnett square
  • Explain how to solve complex genetics problems using probability
  • Describe how the genetic code is translated into a polypeptide
  • Provide an explanation of protein synthesis in the cell and the central dogma
  • Share the definition and examples of genetic engineering

Every lesson in this chapter is available in two formats. Watch the lessons as short videos that average eight minutes each, or read them as full transcripts you can also print to take additional notes. While reviewing the lessons, feel free to send any questions to our subject-matter experts if you don't fully understand a concept or need more details. Before taking your exam, be sure to check your knowledge of each lesson and the entire chapter by taking our short quizzes and a practice exam.

9 Lessons in Chapter 30: Principles of 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.

Mendel's First Law: The Law of Segregation

2. 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.

Mendel's Second Law: The Law of Independent Assortment

3. 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.

Punnett Square: Definition & Example

4. Punnett Square: Definition & Example

This lesson will define what a Punnett square is and show several examples of how one can be used. It will also briefly describe patterns of inheritance.

Using Probability to Solve Complex Genetics Problems

5. Using Probability to Solve Complex Genetics Problems

In this lesson, you're going to learn how to use Punnett squares and the multiplication rule to quickly solve complex genetic problems with respect to the law of independent assortment.

Making Sense of the Genetic Code: Codon Recognition

6. Making Sense of the Genetic Code: Codon Recognition

Explore the genetic code and how it is translated into a polypeptide. We'll practice using the RNA codon chart and learn the basics of codon recognition.

How Does DNA Replicate?

7. 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.

Protein Synthesis in the Cell and the Central Dogma

8. 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.

What is Genetic Engineering? - Definition and Examples

9. 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.

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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