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Ch 17: Praxis General Science: Basic Genetics

About This Chapter

In this chapter, you can brush up on your knowledge of basic genetics by exploring short video lessons. Review Mendel's laws, human genetics research methods, genetic disorders and more as you study for the Praxis General Science assessment.

Praxis General Science: Basic Genetics - Chapter Summary

Enjoy this in-depth look at basic genetics as you prepare for questions on the Praxis General Science assessment. Upon completion of this chapter, you will be prepared for the following:

  • Defining heredity, traits, chromosomes and alleles
  • Describing Mendel's first and second laws
  • Explaining human genetics research methods
  • Discussing the discovery and function of DNA
  • Defining a Punnet square
  • Examining genetic mutations

The lessons offer a comprehensive overview of basic genetics, providing you with definitions, methods, examples and more to get you ready for the exam. Instructors present the lessons in an engaging manner that makes studying fun.

8 Lessons in Chapter 17: Praxis General Science: Basic Genetics
Test your knowledge with a 30-question chapter practice test
DNA: Discovery, Facts, Structure & Function in Heredity

1. DNA: Discovery, Facts, Structure & Function in Heredity

This lesson will help you to navigate the twists and turns of DNA's structure. We'll also clue you in on the amazing discoveries that put this nucleic acid in the limelight as the molecule of heredity.

Genetics: Heredity, Traits & Chromosomes

2. 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

3. 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

4. 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

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.

Punnett Square: Definition & Example

6. 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.

Human Genetics Research Methods: Pedigrees and Population Genetics

7. Human Genetics Research Methods: Pedigrees and Population Genetics

Have you ever wondered how people study human genetics? Do you know what a pedigree or a complex disease is? In this lesson you'll learn about some of the techniques that human geneticists use and what pedigrees and complex diseases have to do with human genetics.

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.

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.
Not Taken

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