Ch 14: MTLE Middle Level Science: Basic Genetics

About This Chapter

Prepare for the MTLE Middle Level Science exam by studying this chapter on basic genetics. With the help of this guide, expand your knowledge of x and y chromosomes, as well as the impact of heredity and mutations, so you can take the exam with confidence.

MTLE Middle Level Science: Basic Genetics - Chapter Summary

With this chapter, let our experience instructors help you get up to speed on basic genetics before taking the MTLE Middle Level Science exam. Study key concepts, such as the effects of mutations and heredity, and the difference between x and y chromosomes, to prepare for test day. Once you finish this chapter, you should be able to:

  • Identify disorders related to x and y chromosomes and their structure
  • Discuss physical traits in relation to genetics
  • Understand the impact of heredity and its link in chromosomes
  • Define what phenotypes are
  • Determine what causes mutations

This course is self-paced, giving you the ability to learn at your own speed. If you need help, our subject matter experts are available to answer questions via the Dashboard. Use the timeline tags to go back to specific points in the videos if you would like to review the material again. After watching each lesson, make sure to take the self-assessment quiz to evaluate your knowledge and ensure you are ready to take the exam with confidence!

6 Lessons in Chapter 14: MTLE Middle Level Science: Basic Genetics
Test your knowledge with a 30-question chapter practice test
X Chromosome: Definition & Disorders

1. X Chromosome: Definition & Disorders

In humans, the X chromosome is one example of a sex chromosome. If you are a girl, you have two X chromosomes. If you are a boy, you have only one X chromosome. Learn more about the X chromosome and disorders associated with it in this lesson.

Y Chromosome: Definition, Disorders & Structure

2. Y Chromosome: Definition, Disorders & Structure

The Y chromosome is found in males and is one of two chromosomes that determine gender. This article focuses on the Y chromosome, the genes it contains, and disorders that are related to this structure in men.

Genetic Physical Traits: Definition & Examples

3. Genetic Physical Traits: Definition & Examples

This lesson describes the relationship between genetics and physical traits. It details the relationship between DNA and physical form. Also included are real-world examples, illustrations, and a brief quiz.

Genetics: Heredity, Traits & Chromosomes

4. 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.

What Is a Phenotype? - Definition & Example

5. 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.

Mutations: When DNA Is Copied Wrong

6. 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.
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