Ch 46: Genetics & Heredity - ORELA Middle Grades General Science

About This Chapter

Rediscover genetics and heredity by reviewing short and engaging videos. In a short period of time, you will have the insight you need to address this subject area on the ORELA Middle Grades General Science assessment.

Genetics & Heredity - ORELA Middle Grades General Science - Chapter Summary

Use the lessons in this chapter to refresh your knowledge of concepts covered on the ORELA Middle Grades General Science assessment. After getting reacquainted with genetics and heredity, you will be ready to address the following:

  • Understanding the basics of genetics
  • Identifying the properties of alleles
  • Examining the exceptions to simple dominance and independent assortment
  • Describing chromosomal linkage and crossing over
  • Analyzing human genetics and model organisms
  • Discussing human genetics research methods

In this chapter, you can get the information you need to fully understand various aspects of genetics and heredity. Subject-matter experts offer quality definitions and examples in an entertaining visual package that makes studying for the exam fun and easy.

Genetics & Heredity: ORELA Middle Grades General Science Chapter Objectives

The ORELA assessment has been replaced by the NES Middle Grades General Science assessment in Oregon. Its goal remains to ensure you have the knowledge and skills necessary to secure educator licensure as you prepare to teach general science to middle grades students. The test is divided into four content domains. Topics in this chapter are found in the life science domain, which constitutes approximately 25% of the total exam.

There are 150 multiple-choice questions on the assessment which is taken on computer and lasts three hours. You can prepare for these questions by taking the self-assessment quizzes in this chapter. If you have any questions about lesson topics, feel free to send them to our experts who are ready to help.

7 Lessons in Chapter 46: Genetics & Heredity - ORELA Middle Grades General Science
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.

Exceptions to Independent Assortment: Sex-Linked and Sex-Limited Traits

4. Exceptions to Independent Assortment: Sex-Linked and Sex-Limited Traits

More men are color blind compared women. But often, not every brother, cousin or uncle in a family tree is color blind. Why not? How can genetics explain this seemingly complex inheritance pattern?

Crossing Over & Gene Linkage: Definition, Importance & Results

5. Crossing Over & Gene Linkage: Definition, Importance & Results

During this latest development of his flying hamster experiments, Adrian must learn about linked genes and recombinant chromosomes to unlock the mystery of the fire-breathing hamster. In this lesson, you'll look at another exception to Mendel's law of independent assortment.

Human Genetics: Multifactorial Traits & Model Organisms

6. Human Genetics: Multifactorial Traits & Model Organisms

How do we study human genetics when most traits arise from multiple genes? It's certainly more complicated that drawing a simple Punnett square. Never fear, for model organisms are here!

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.

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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