About This Chapter
How it works:
- Identify which concepts are covered on your genetics and principles of heredity homework.
- Find videos on those topics within this chapter.
- Watch fun videos, pausing and reviewing as needed.
- Complete sample questions and get instant feedback.
- Finish your genetics and principles of heredity homework with ease!
Topics from your homework you'll be able to complete:
- Properties of alleles
- Mendel's Law of Segregation and Law of Independent Assortment
- Exceptions to simple dominance
- Exceptions to independent assortment
- Chromosomal linkage and crossing over
- Human genetics and model organisms
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. 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!
11. Complete Dominance: Definition & Examples
This lesson examines complete dominance, which is one of the ways the genes you get from your parents can show up. It also covers the vocabulary needed to understand complete dominance as well as examples.
12. Gene Flow: Definition & Examples
Chances are you've probably witnessed gene flow today! This lesson will define gene flow and give examples. It will also explain why gene flow creates genetic diversity.
13. 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.
14. True Breeding: Definition & Variety
True breeding plants were utilized by Gregor Mendel during his experiments with pea plants. We will look into detail here as to how useful these were in determining inheritance.
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