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Ch 4: Genetics for Anthropologists: Help and Review

About This Chapter

The Genetics for Anthropologists chapter of this Intro to Anthropology Help and Review course is the simplest way to master an understanding of genetics in the context of anthropology. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of genetics as it relates to anthropology.

Who's it for?

Anyone who needs help learning or mastering introductory anthropology material will benefit from taking this course. There is no faster or easier way to learn introductory anthropology. Among those who would benefit are:

  • Students who have fallen behind in understanding Mendelian genetics for anthropologists
  • Students who struggle with learning disabilities or learning differences, including autism and ADHD
  • Students who prefer multiple ways of learning social science (visual or auditory)
  • Students who have missed class time and need to catch up
  • Students who need an efficient way to learn about genetics for anthropologists
  • Students who struggle to understand their teachers
  • Students who attend schools without extra social 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 Genetics for Anthropologists 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 Genetics for Anthropologists chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any genetics question. 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 genetics unit of a standard general anthropology course. Topics covered include:

  • Allele properties
  • Mendel's first and second laws
  • Exceptions to simple dominance
  • The chi-square test
  • Phenotypic plasticity and genotype-environment interaction

18 Lessons in Chapter 4: Genetics for Anthropologists: Help and Review
Overview of Genetics

1. Overview of Genetics

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.

Mendel's First Law: The Law of Segregation

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.

Application of Mendel's First Law

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.

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, queue up the video and see how.

Application of Mendel's Second Law

6. Application of Mendel's Second Law

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

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.

Exceptions to Independent Assortment: Sex Linked and Sex Limited Traits

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?

Chromosomal Linkage and Crossing Over

9. Chromosomal Linkage and Crossing Over

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.

Complementation Tests: Alleles, Crosses & Loci

10. Complementation Tests: Alleles, Crosses & Loci

Don't judge an organism by its phenotype; sometimes, two organisms will have the same phenotype but completely different genotypes. In this lesson, we'll learn how a complementation test can identify if mutations occurred within the same gene or different genes.

Epistasis: Definition & Examples

11. Epistasis: Definition & Examples

Labradors come in three different colors due to two different genes. In this lesson, find out how epistasis works as one phenotype is controlled by the products from two or more genes.

Lethal Alleles: Definition & Examples

12. Lethal Alleles: Definition & Examples

Some alleles are recessive, some are dominant, and some are just plain bad. In this lesson, we'll learn about how rare lethal alleles can affect the survival of an organism. Specifically, we'll talk about how something like coat color can be lethal in agouti mice.

The Chi-Square Test

13. The Chi-Square Test

What if you expect one thing, but get another? The chi-square test is a method of statistical analysis that can help us identify if the results from a genetic cross are simply due to chance, or if something else is happening. Learn about the chi-square test in this lesson.

Polygenic Traits: Definition & Examples

14. Polygenic Traits: Definition & Examples

If variety is the spice of life, polygenic inheritance is one genetic mechanism giving us a continuous range of possibilities. In this lesson, learn how a polygenic trait, like height, can be controlled by multiple genes.

Genotype-Environment Interaction and Phenotypic Plasticity

15. Genotype-Environment Interaction and Phenotypic Plasticity

It's not just what's in your genes. In this lesson, we'll begin to explore how some phenotypes are influenced by the interaction between a genotype and the environment. Further, some organisms rely on phenotypic plasticity to change in response to the environmental changes.

The Broad-Sense Heritability Equation

16. The Broad-Sense Heritability Equation

Heritability describes how a phenotype is affected by genetic variation. Who you are is more than just your DNA - it's somewhat influenced by things, like what you eat and where you live. In this lesson, find out how geneticists account for variations using the broad-sense heritability equation.

Using Twin Studies to Determine Heritability

17. Using Twin Studies to Determine Heritability

A twin can be more than a built-in buddy for life. Scientists can use monozygotic and dizygotic twin pairs to study the heritability of just about anything, from cancer to behavior.

Genomic Imprinting: Definition and Examples

18. Genomic Imprinting: Definition and Examples

Your parents may have 'imprinted' many things on you, such as how to act at the dinner table and how to spend your money. Your parents also 'imprinted' some of your genes. In this lesson, we'll learn about how genomic imprinting is a form of transcription regulation that is a type of epigenetic inheritance.

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