About This Chapter
Cellular Genetics - Chapter Summary
These lessons are designed as preparation resource for testing on cellular genetics. Review information about the structure of a gene, the features of a chromosome, types of base pairs, the translation of RNA into amino acids, and the process of recombination. Take a look at lessons about material like:
- The genome
- Chromosome structure
- Cell differentiation
- The definition, regulation and analysis of gene expression
- Messenger RNA transcription
- Codon recognition
- The mechanism of gene duplication
Our experts created lessons which are short, engaging text transcripts and videos. A multiple-choice quiz is available after each for assessing how well you understood the material just covered. You can use a feature which allows you to submit a question directly to the instructor. A test at the end of the chapter will verify your understanding of the major concepts.
1. 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.
2. What is DNA?
In this lesson, we will learn what DNA is, what its characteristics and functions are, even where it is located and what information it contains. We'll also learn how the double helix is created. Find out more.
3. What Is a Gene? - Definition & Structure
Genes are little codes found in our cells that make up who we are. This lesson covers where genes are located, how we get our genes, and the functions of genes.
4. How is DNA Organized into Chromosomes? - Structure & Function
Explore the structure of chromosomes and see how DNA fits inside the nucleus of the cell. In this lesson, you'll learn about histones, chromatin and nucleosomes.
5. Parts of a Chromosome & Their Roles
Learn all about chromosomes, including the different parts of a chromosome and the types of chromosomes in diploid organisms like humans. Learn the vocab used with chromosomes.
6. Recombination: Definition & Process
Recombination is a nifty little way to mix up your DNA. In this lesson, you will learn about chromosomes, meiosis, and why recombination occurs. Test yourself afterwards with a quiz.
7. What Is Cell Differentiation? - Process, Importance & Examples
In this lesson, you will learn how your cells become specialized. This specialization of cells allows them to perform different functions and create different parts of your body.
8. What Is Gene Expression? - Regulation, Analysis & Definition
What is a gene? How are genes expressed? What does the term gene expression mean? Can we analyze gene expression? These questions will be addressed in this lesson.
9. Base Pairs: Definition & Types
Nitrogenous bases pair with each other using hydrogen bonds. Learn how base pairs keep DNA together and how they help RNA take on useful shapes. Afterwards, you can test your knowledge with a quiz.
10. Transcription of Messenger RNA (mRNA) from DNA
In this lesson, you will gain a thorough understanding of how transcription works. We will investigate how DNA is transcribed into RNA with the help of a promoter and RNA polymerase. Learn the purpose of messenger RNA and explore the three phases of transcription.
11. What Is the Genetic Code That Translates RNA Into Amino Acids?
How is RNA translated into a series of amino acids? Learn the language of the genetic code, explore a codon dictionary, and discover some basics of genetics in this lesson on translation.
12. Making Sense of the Genetic Code: Codon Recognition
Explore the genetic code and how it is translated into a polypeptide. We'll practice using the RNA codon chart and learn the basics of codon recognition.
13. 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.
14. Gene Duplication: Definition & Mechanism
Organisms require a huge variety of proteins to function, and they must have the genes to make the proteins that determine the traits necessary for life. Learn about the role that gene duplication plays in cells, then test your knowledge with a quiz.
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Other chapters within the Ohio State Test - Biology: Practice & Study Guide course
- Scientific Inquiry & Mathematical Reasoning
- Structure & Function of Cells
- Requirements of Biological Systems
- Cellular Processes
- How Enzymes Work
- Basics of Gene Mutations
- Genetics and Principles of Heredity
- DNA Models & Technology
- The Origin and History of Life On Earth
- The Theory of Evolution
- Population Evolution
- Evolution of Life on Earth
- Natural Selection
- Speciation & Speciation Barriers
- Diversity & Interdependence of Life
- Environmental Ecology
- Ohio State Test - Biology Flashcards