About This Chapter
Mendel & Gene Expression - Chapter Summary
The life and biography of Gregor Mendel, known as the Father of Modern Genetics, is described in this chapter. Genotypes and the major role they play in determining how we look is introduced, as well as the concept of multiple alleles complete with examples from nature. The Rh factor and why blood compatibility during pregnancy is essential will also be presented.
You will learn about DNA fingerprinting and why it's used, dihybrid crosses and the Human Genome Project. This chapter will prepare you to:
- Define monohybrid and the characteristics they predict
- Differentiate between genes and alleles
- Explain how dominant and recessive phenotypes work
- Describe how codon recognition works
- Outline the different blood types and how they're passed from parent to child
- Detail how polygenic inheritance designates many physical traits
- Build and read a pedigree analysis in less than ten minutes
- Give examples of gene linkage
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1. Gregor Mendel & Genetics: Experiments, Laws & Discovery
Gregor Mendel is currently known as the Father of Modern Genetics. This lesson goes through a brief history of his life, workings as a scientist, and his findings.
2. Monohybrid Cross: Definition & Example
Some genetic characteristics are inherited in predictable patterns. In this lesson you will learn what monohybrids are and how to predict the kinds of characteristics that their offspring will show.
3. Difference Between Genes & Alleles
Genes are passed from parent to child. Each parent provides one variation of the gene, called an allele, to the child. This lesson will discuss how genetic information is inherited and how it is expressed.
4. What are Genotypes? - Definition & Examples
In this lesson, you will learn about what genotypes are, where they come from and how they play a major role in determining how your body works and what you look like.
5. Differences Between Dominant & Recessive Phenotypes
In this lesson, we're going to compare and contrast dominant and recessive phenotypes. Here, you'll understand differences in how genes create dominant versus recessive phenotypes, how they are inherited, and different types of dominant and recessive inheritance.
6. Codon Recognition: How tRNA and Anticodons Interpret the Genetic Code
How does codon recognition work at the molecular level? Can you use tRNA and anticodons to decipher the genetic code? Learn the mechanics of codon recognition and build a polypeptide from a sample genetic code.
7. Multiple Alleles: Definition & Example
This lesson introduces the concept of multiple alleles. It provides the definition of multiple alleles and presents several examples of this type of trait within both human and animal populations.
8. Blood Type Inheritance in Humans
This lesson explains differences among the four blood types in humans: A, B, AB, and O. It also shows how these blood types are passed from parents to children.
9. Rh Blood Group, Rh Factor & Erythroblastosis Fetalis
Rh factor is a red blood cell antigen found in most people. Those with Rh factor are Rh positive, while those without are Rh negative. In this lesson you will learn about Rh blood compatibility and its importance during pregnancy.
10. Polygenic Inheritance: Definition & Examples
In this lesson you will learn how traits like your height, weight, hair color, and skin pigmentation are determined by the complex interaction of several different genes in a process called polygenic inheritance.
11. What is DNA Fingerprinting? - Process & Uses
DNA fingerprinting is a very useful technique that has applications beyond criminal and forensic analysis. In this lesson, you'll learn what DNA fingerprinting is, how it is done, and different ways it can be used to determine identity.
12. Pedigree Analysis in Human Genetics: Tutorial
One of the oldest genetic techniques is pedigree analysis, and yet it is still used every day all around the world by doctors, geneticists, and genetic counselors. Building and reading a pedigree is actually fairly easy if you know what the symbols mean. In fact, it's so easy that you can learn how to do it in less than ten minutes if you watch this video!
13. Dihybrid Cross: Definition & Example
In this lesson, learn what a dihybrid cross is and see an example. Also, find out about phenotypic ratio and how it's the same for each dihybrid cross. After the lesson, test your knowledge with a quiz.
14. Linked Genes: Definition & Examples
Gene linkage is one of those things that can turn even the simplest genetic question into a complex mess. This lesson will teach you what a linked gene is and take you through some solid examples.
15. What is the Human Genome Project? - Definition, Purpose & Benefits
We often hear about scientific research being done but may not truly understand what that entails. This is not one of those times. The Human Genome Project has allowed many breakthroughs in genetic research that affect us in a very tangible way, right here, right now.
16. What is Gene Therapy? - Definition & Uses
Gene therapy may be experimental, but it has the potential to revolutionize medicine. Learn what gene therapy is, how it's currently used, and how it may be used in the future. Then test yourself with a quiz.
17. Evolution of Genes
In this lesson, readers will explore the evidence available from current research about the evolution of genes and their actions. Specifically, this lesson reviews evidence that indicates the presence of ancestral vertebrate gene homologs in lower animal classes.
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Other chapters within the HSC Biology: Exam Prep & Syllabus course
- Scientific Investigations Overview
- Scientific Validity
- Data Collection & Analysis in Science
- Scientific Presentations
- Internal & External Environments
- Gas & Nutrient Transport in Animals & Plants
- Regulation in Animals & Plants
- Chromosomal Structure & Inheritance
- Mechanisms of Genetic Change
- DNA Replication & Protein Synthesis
- Recombinant DNA Technology
- Biotechnology Basics
- Genetic Engineering & Reproductive Technologies
- Classification Hierarchy
- Health & Disease
- Immune Response
- Nervous System & Sensory Mechanisms
- Anatomy & Disorders of the Eye
- Sound & Hearing
- Evolutionary Change
- Time & Human Evolution
- History of Botany
- Photosynthesis Basics
- HSC Biology Flashcards