About This Chapter
Who's It For?
Anyone who needs help learning or mastering human genetics material will benefit from the lessons in this chapter. There is no faster or easier way to learn about human genetics. Among those who would benefit are:
- Students who have fallen behind in understanding alleles, Mendel's laws, the exceptions to simple dominance and independent assortment, chromosomes, the genome, or the effects of genetics
- Students who struggle with learning disabilities or learning differences, including autism and ADHD
- Students who prefer multiple ways of learning science (visual or auditory)
- Students who have missed class time and need to catch up
- Students who need an efficient way to learn about human genetics
- Students who struggle to understand their teachers
- Students who attend schools without extra science learning resources
How It Works:
- Find videos in our course that cover what you need to learn or review.
- Press play and watch the video lesson.
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with short quizzes.
- Verify you're ready by completing the Human Genetics Study Guide chapter exam.
Why It Works:
- Study Efficiently: Skip what you know, review what you don't.
- Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
- Be Ready on Test Day: Use the Human Genetics Study Guide chapter exam to be prepared.
- Get Extra Support: Ask our subject-matter experts any questions related to human genetics. They're here to help!
- Study With Flexibility: Watch videos on any web-ready device.
Students Will Review:
This chapter helps students review the concepts in a human genetics unit of a standard science course. Topics covered include:
- An introduction to human genetics
- The properties of alleles
- Mendel's laws and their applications
- Simple dominance
- Independent assortment
- The properties of chromosomes
- The genome
- Genetic models and inheritance
- The effects of genetic and environmental factors on human behavior and development
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.
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.
3. 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.
4. 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.
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.
6. 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!
7. 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.
8. 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?
9. 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.
10. Basic Genetics: The Genome & Chromosomes
There are approximately 3 billion bases in the human genome. In this lesson, you'll learn more about the genome and its organization into chromosomes. We think about DNA often as the blueprint for life, but we can also think of it as the recipe for life with the nucleus being the library.
11. 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!
12. How Genetics Helps Us Understand Human Behavior
This lesson demonstrates how physical anthropologists use genetics to better understand the human experience. You'll learn how they combine their knowledge of both biology and the social sciences together to contribute to their field.
13. How Genetics and the Environment Interact in Human Development
Everyone is different. But what makes a person unique? In this lesson, we'll examine the way genes and the environment affect who a person is, including looking at the nature vs. nurture debate and looking at how nature and nurture influence one another.
14. Pedigree Analysis in Human Genetics: Inheritance Patterns
So you've learned what a pedigree is and how to read or even create one. Now you're ready to learn how to analyze a pedigree and figure out what kind of inheritance pattern a genetic condition follows!
15. Types of Studies in Behavioral Genetics: Twin, Family & Adoption
Are you destined to inherit your mother's penchant for collecting old postcards or your father's constant worry that something bad is about to happen? Find out with this lesson, which delves into the world of genetic and environmental behaviors and personality traits.
16. Why Do People Have Eyebrows?
Do you have eyebrows? Almost certainly. But do you know why you have them? It turns out there is more than one possible explanation and this lesson goes over three major possibilities.
17. What Causes Gray Hair?
Though it might be a touchy subject, we're still going to tackle it in this lesson. Gray hair: what causes it, its links to genetics and environmental factors, and shock theory.
18. The Aquatic Ape Theory (AAT)
The Aquatic Ape Theory suggests that human ancestors spent much of their time in shoreline or aquatic environments. In this lesson, we'll discuss reasons this idea is compelling, as well as reasons it's not currently supported by the scientific community.
19. George Beadle & Edward Tatum Experiment
There are so many discoveries in the field of genetics. Learn how two scientists worked with bread molds in the 1940s to discover an essential property of genes and enzymes.
20. What is the Difference Between Sticky Ends & Blunt Ends?
Restriction enzymes are used in science laboratories to cut DNA. These enzymes can make pieces with sticky ends that fit together like puzzle pieces. They can also create blunt ends which are flat and can fit up against any other DNA sequence.
21. Immunogenetics: Definition & Examples
By studying immunogenetics, we have been able to safely perform blood transfusions and organ transplants, as well as treat autoimmune diseases like diabetes. In this lesson, learn more about the fascinating science of immunogenetics!
22. 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.
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Other chapters within the Human Biology Study Guide course
- Introduction to Human Biology
- Human Respiratory System Study Guide
- Human Circulatory System Study Guide
- Blood Vessels Study Guide
- Human Endocrine System Study Guide
- Skeletal System Study Guide
- Muscular System Study Guide
- Integumentary System Study Guide
- Sympathetic & Parasympathetic Nervous Systems Study Guide
- Digestive System Study Guide
- Urinary System Study Guide
- Reproductive System Study Guide
- Human Reproduction Study Guide
- Cell Structures & Cycles Study Guide
- Disease & Disorders Study Guide
- Disease Origins Study Guide
- Diseases & Disorders Study Guide
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