About This Chapter
How it works:
- Identify the lessons in Glencoe Biology's Sexual Reproduction and Genetics chapter with which you need help.
- Find the corresponding video lessons within this companion course chapter.
- Watch fun videos that cover the sexual reproduction and genetics topics you need to learn or review.
- Complete the quizzes to test your understanding.
- If you need additional help, re-watch the videos until you've mastered the material or submit a question for one of our instructors.
Students will learn:
- Stages of meiosis I and II
- Allele properties
- Mendel's first and second laws
- Chromosomal linkage and recombination
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1. Meiosis: Comparison to Mitosis, Crossing Over & Process
Welcome to meiosis, a realm of division doubled for reproduction untroubled. You'll get a preview of both divisions of meiosis and see what it takes to go from a diploid cell to a haploid gamete.
2. Meiosis I Stages: Prophase I, Metaphase I, Anaphase I & Telophase I
How does meiosis keep track of homologs and reduce the genome by half? Know these answers and more as we navigate the steps of meiosis I. This lesson will be tetradical!
3. Meiosis II: Definition, Stages & Comparison to Meiosis I
Behold round two of meiotic cell division! You'll see how meiosis II keeps the genome intact and gives the final push to produce haploid gametes, which make the world go round.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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!
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. Dominant Trait: Definition & Example
Can you roll the edges of your tongue towards the center? Do you have detached earlobes that hang free? Are your eyes brown? If you answered yes to any one of these, then you have a dominant trait. Learn what dominant traits are in this lesson.
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Other chapters within the Glencoe Biology: Online Textbook Help course
- Glencoe Biology Chapter 1: The Study of Life
- Glencoe Biology Chapter 2: Principles of Ecology
- Glencoe Biology Chapter 3: Communities, Biomes, and Ecosystems
- Glencoe Biology Chapter 4: Population Ecology
- Glencoe Biology Chapter 5: Biodiversity and Conservation
- Glencoe Biology Chapter 6: Chemistry in Biology
- Glencoe Biology Chapter 7: Cellular Structure and Function
- Glencoe Biology Chapter 8: Cellular Energy
- Glencoe Biology Chapter 9: Cellular Reproduction
- Glencoe Biology Chapter 11: Complex Inheritance and Human Heredity
- Glencoe Biology Chapter 12: Molecular Genetics
- Glencoe Biology Chapter 13: Genetics and Biotechnology
- Glencoe Biology Chapter 14: The History of Life
- Glencoe Biology Chapter 15: Evolution
- Glencoe Biology Chapter 16: Primate Evolution
- Glencoe Biology Chapter 17: Organizing Life's Diversity
- Glencoe Biology Chapter 18: Bacteria and Viruses
- Glencoe Biology Chapter 19: Protists
- Glencoe Biology Chapter 20: Fungi
- Glencoe Biology Chapter 21: Introduction to Plants
- Glencoe Biology Chapter 22: Plant Structure and Function
- Glencoe Biology Chapter 23: Reproduction in Plants
- Glencoe Biology Chapter 24: Introduction to Animals
- Glencoe Biology Chapter 25: Worms and Mollusks
- Glencoe Biology Chapter 26: Arthropods
- Glencoe Biology Chapter 27: Echinoderms and Invertebrate Chordates
- Glencoe Biology Chapter 28: Fishes and Amphibians
- Glencoe Biology Chapter 31: Animal Behavior
- Glencoe Biology Chapter 32: Integumentary, Skeletal, and Muscular Systems
- Glencoe Biology Chapter 33: Nervous System
- Glencoe Biology Chapter 34: Circulatory, Respiratory, and Excretory Systems
- Glencoe Biology Chapter 35: Digestive and Endocrine Systems
- Glencoe Biology Chapter 36: Human Reproduction and Development
- Glencoe Biology Chapter 37: The Immune System