Ch 15: OAE - Biology: Basic Genetics

About This Chapter

Allow us to walk you through subjects in introductory genetics with our short, enjoyable, easy-to-use video lessons so you'll be prepared to pass the OAE Biology exam with flying colors.

OAE - Biology: Basic Genetics - Chapter Summary

These lessons will teach you about basic genetics by introducing you to key concepts and scientific laws. Use them as a study resource as your OAE Biology exam date approaches. This chapter will prepare you to:

  • Discuss broad topics in the field of genetics
  • Use Mendel's Law of Segregation
  • Identify exceptions to simple dominance when using the Law of Segregation
  • Apply Mendel's Law of Independent Assortment to different experiments
  • Recognize sex-linked and sex-limited exceptions to the Law of Independent Assortment
  • Understand chromosomal linkage and the concept of crossing over in genetics
  • Delve further into human genetics and model organisms
  • Identify genetic abnormalities in human development
  • Define genetic engineering

In order to make learning about genetics fun and interesting, our instructors have organized these awesome video lessons for you to follow along with at your own pace. Learn all about chromosomes, Mendel's Laws, and genetic abnormalities before testing your knowledge with our self-assessments.

Objectives of the Basic Genetics Chapter

Teachers in the state of Ohio must pass the Ohio Assessments for Educators (OAE) if they wish to be licensed and teach. Candidates only need to take the OAE Biology exam corresponding to their subject matter. All life sciences instructors teaching grades 7-12 must pass the exam. A teacher must earn a 220 on an adjusted scale of 100 to 300 on an exam in order to pass.

The assessment is divided into five domains. This study guide will help prepare you to answer questions in the Genetics and Evolution domain, which accounts for 27% of the overall test. Each of the 150 questions is a stand-alone multiple-choice question. You will have three hours to finish this computer-based test. The questions on this exam are drawn from an established criterion determined by the state of Ohio.

13 Lessons in Chapter 15: OAE - Biology: Basic 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.

Application of Mendel's First Law

3. Application of Mendel's First Law

Hollywood Squares? No, it's Punnett Squares! Those wacky diagrams are a geneticist's best friend. See how they turn geneticists into soothsayers, predicting the genotypic and phenotypic future.

Mendel's Second Law: The Law of Independent Assortment

4. 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.

Mendel's Dihybrid Cross Example: Practice & Ratio

5. Mendel's Dihybrid Cross Example: Practice & Ratio

Oh no! Twice the genes and sixteen genotypes - a dihybrid cross seems overwhelming to understand. Never fear though, Punnett squares will save the day!

Exceptions to Simple Dominance: Codominance and Incomplete Dominance

6. 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

7. 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

8. 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

9. 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!

Genetic Abnormalities in Human Growth and Development

10. Genetic Abnormalities in Human Growth and Development

What are mutations and other chromosome abnormalities? How can these abnormalities affect human development? What are some common genetic disorders and their causes? Learn the answers to these questions in this lesson.

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 Directional Selection? - Examples, Definition & Graph

12. What is Directional Selection? - Examples, Definition & Graph

Natural selection is the driving force behind evolution - the gradual change in organisms' genetic makeup over time. In this lesson, you'll learn about directional selection, review some examples, and end with a quiz.

Amensalism: Examples & Definition

13. Amensalism: Examples & Definition

Many types of relationships exist between species on Earth, but not all are positive. In this lesson, we will learn about amensalism to gain an understanding of how this unique type of relationship works.

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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