Ch 4: Understanding Genetics & DNA

About This Chapter

Review genetics and DNA concepts with this fun and convenient science chapter. Our short lessons and practice quizzes are designed to boost your comprehension of these topics for upcoming exams, class assignments, homework and more.

Understanding Genetics & DNA - Chapter Summary

If you're looking for a quick way to review basic genetics and DNA concepts, look no further than this helpful science chapter. Containing simple and engaging lessons, the chapter provides expert instruction on essential genetics and DNA-related concepts, including genotypes, DNA mutation, genetic bacteria recombinations, genetic manipulation, fungi propagation and much more. Take the included self-assessment quizzes to solidify your understanding of the lesson material. The chapter is entirely self-paced, and our instructors are available to answer any questions you may have. Completing this chapter can help you:

  • Evaluate examples of genotypes and phenotypes
  • Summarize the haploid life cycle
  • Recognize diploid cells
  • Differentiate between asexual and sexual reproduction
  • Assess fungi propagation in terms of asexual and sexual life cycles
  • Explain DNA mutation
  • Compare spontaneous and induced mutations
  • Identify types of genetic bacteria recombinations
  • Assess the advantages and disadvantages of genetic manipulation
  • Define genetic engineering
  • Understand why DNA plasmids are important in genetic engineering

12 Lessons in Chapter 4: Understanding Genetics & DNA
Test your knowledge with a 30-question chapter practice test
What are Genotypes? - Definition & Examples

1. What are Genotypes? - Definition & Examples

In this lesson, you will learn about what genotypes are, where they come from and how they play a major role in determining how your body works and what you look like.

What Is a Phenotype? - Definition & Example

2. What Is a Phenotype? - Definition & Example

Do you have blue eyes or brown eyes, or something else, like hazel? That's your phenotype for eye color. Discover examples of phenotypes, and how they are (partly) determined by your genes.

Haploid: Definition, Life Cycle & Example

3. Haploid: Definition, Life Cycle & Example

This lesson addresses the concept of haploid cells. It describes haploid cells and the role they play in various life cycles. Illustrations, real-world examples, and a brief quiz are included.

Diploid Cell: Definition & Examples

4. Diploid Cell: Definition & Examples

Diploid cells are the most numerous cells in all living things - plants and animals. In this lesson, you will learn why they're important for life to continue and how they keep future cells healthy.

Asexual vs. Sexual Reproduction: Comparison & Characteristics

5. Asexual vs. Sexual Reproduction: Comparison & Characteristics

Did you know that some organisms can reproduce without a mate? Check out this video lesson on asexual versus sexual reproduction to discover the different ways organisms can reproduce and the main differences between mitosis and meiosis.

Fungi Propagation: Sexual & Asexual Life Cycles

6. Fungi Propagation: Sexual & Asexual Life Cycles

Not every organism gets to decide between reproducing sexually or asexually, and that makes fungi pretty special. In this lesson we are going to look at different forms of fungi propagation and discover how each works, as well as when and why fungi use each.

Mutations: When DNA Is Copied Wrong

7. 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.

Spontaneous vs. Induced Mutations

8. Spontaneous vs. Induced Mutations

In this lesson you will learn about one of the aspects of nature that makes evolution possible: mutation. Specifically, we'll look at the difference between spontaneous and induced mutations.

Types of Genetic Recombination in Bacteria

9. Types of Genetic Recombination in Bacteria

Genetic recombination in bacteria can occur in a few different ways. This video lesson will explore those methods, providing you with good understanding of how genetic information may be exchanged between these types of cells.

Genetic Manipulation: Definition, Pros & Cons

10. Genetic Manipulation: Definition, Pros & Cons

In this lesson, we'll be looking at genetic manipulation, which is essentially the manipulation of gene sequences in living organisms to alter specific traits. We'll also look at how it works and the controversies surrounding it, and then you'll test your knowledge with a quiz!

What is Genetic Engineering? - Definition and Examples

11. 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.

What is a DNA Plasmid? - Importance to Genetic Engineering

12. What is a DNA Plasmid? - Importance to Genetic Engineering

DNA plasmids play an integral part in most genetic engineering experiments. In this lesson, you'll learn about key features of a plasmid, such as a multiple cloning site, an origin of replication, and a selectable marker.

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

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