About This Chapter
How it works:
- Begin your assignment or other GED science work.
- Identify the animal reproduction and development concepts that you're stuck on.
- Find fun videos on the topics you need to understand.
- Press play, watch and learn!
- Complete the quizzes to test your understanding.
- As needed, submit a question to one of our instructors for personalized support.
Who's it for?
This chapter of our GED science tutoring solution will benefit any student who is trying to learn animal reproduction and development and earn better grades. This resource can help students including those who:
- Struggle with understanding spermatogenesis, oogenesis, embryo implantation, amniotic fluid, Spemann's Organizer, fate mapping or any other animal reproduction and development topic
- Have limited time for studying
- Want a cost effective way to supplement their science learning
- Prefer learning science visually
- Find themselves failing or close to failing their animal reproduction and development unit
- Cope with ADD or ADHD
- Want to get ahead in GED science
- Don't have access to their science teacher outside of class
Why it works:
- Engaging Tutors: We make learning animal reproduction and development simple and fun.
- Cost Efficient: For less than 20% of the cost of a private tutor, you'll have unlimited access 24/7.
- Consistent High Quality: Unlike a live GED science tutor, these video lessons are thoroughly reviewed.
- Convenient: Imagine a tutor as portable as your laptop, tablet or smartphone. Learn animal reproduction and development on the go!
- Learn at Your Pace: You can pause and rewatch lessons as often as you'd like, until you master the material.
- Become familiar with the processes of oogenesis and spermatogenesis.
- Describe the morula and blastula in early embryonic development.
- Examine the processes of embryo implantation and placenta formation.
- Explain the functions of the placenta.
- List the three germ layers formed by gastrulation.
- Discuss Spemann's organizer.
- Explore the factors that inhibit development.
- Learn how differentiation is controlled by concentration gradients.
- Understand how cell development can be tracked by fate mapping.
1. Overview of Animal Reproduction and Development
At this stage in life, you likely know where babies come from. However, did you know that some animals can make clones of themselves and reproduce sexually too? In this lesson, you'll learn more about sexual reproduction and early vertebrate development.
2. Spermatogenesis: How the Male Reproductive System Produces Sperm
In this lesson, you'll learn the series of steps necessary to produce a fully functional sperm cell. You'll also look at the structure of a sperm cell and see how it's equipped to venture forth into new territory.
3. Oogenesis: How the Female Reproductive System Produces Eggs
Did you know that a human female already has all of the oocytes that she will make in her entire life before she is even born? In this lesson, you'll learn how the human body produces an ovum through the process of oogenesis. You'll also learn how polar bodies help to ensure that female gametes are of high quality even though they are not produced in high quantities.
4. Early Embryonic Development: The Morula and Blastula
This lesson on the early stages of mammalian development covers the processes following fertilization, such as cleavage, the morula formation and blastula formation. Watch to learn what the inner cell mass, trophoblast cells and blastocyst are, as well as their functions within embryonic development.
5. Embryo Implantation and Placenta Formation
This lesson will cover the journey the mammalian embryo first makes after it has been fertilized. Learn how maternal blood moves through the embryo, and how the placenta is formed.
6. The Placenta and the Fetus: Structure and Function
Have you ever wondered how a baby eats before it's born or if babies go to the bathroom while still inside their mother? In this lesson, you will learn about the placenta and how it works to ensure a fetus stays well-nourished and healthy before birth.
7. Amniotic Fluid, The Amnion, and the Yolk Sac
From a chick developing inside an egg to a human baby growing in its mother's womb, all developing vertebrates rely on a support system to protect them, feed them, supply them with oxygen, remove wastes, and do much, much more to ensure that the embryo grows and develops into a fully functional organism. In this lesson, you'll learn about the different parts of that support system and some of the things that they do.
8. Gastrulation and the 3 Germ Layers (Ectoderm, Endoderm & Mesoderm)
Gastrulation is a key process in embryonic development - it's how a simple ball of cells begins to grow into a fully functioning being! Watch this lesson to learn about a key process in the development of almost all multicellular organisms.
9. Spemann's Organizer: Controller of Cell Fate
Have you ever wondered how different parts of a developing embryo know what kind of tissue to become? What prevents two heads from developing on the same embryo, or for that matter, what ensures that a head develops at all? A small group of cells called Spemann's organizer determines the fates of the cells around them.
10. Concentration Gradients, Signaling Molecules & Inhibitors in Development
The discovery and characterization of Spemann's organizer was a significant achievement in the field of developmental biology, but this small piece of the dorsal lip is only the tip of the iceberg when it comes to coordinating the differentiation of all of the various tissue types in a growing embryo. In this lesson, you'll learn about concentration gradients and how they can be used to create various combinations of signaling molecules in different parts of the embryo.
11. How Signaling Molecules Control Differentiation
From signaling molecules to transcription factors and gene expression, in this lesson you'll learn what it takes for a cell to differentiate. You'll also learn some of the ways a cell can make sense of different combinations of signaling molecules and how these combinations can be used to guide a cell through the process of differentiation.
12. How Fate Mapping Is Used to Track Cell Development
Over the years, scientists have developed several methods to label and track groups of cells as they develop. These types of experiments are called fate mapping studies. In this lesson, you'll learn the basics of fate mapping and see how technology has allowed scientists to improve fate mapping techniques.
13. Blastocoel: Definition & Concept
Formation of the blastocoel is an important step in development -- it sets the stage for future growth and change in the cells of the early embryo. Learn how the blastocoel helps and protects these cells.
14. Gastrula: Definition & Concept
A gastrula is a developmental stage of some animal embryos in which different germ layers are present. In this lesson, learn about the structure of a gastrula, how it forms, and what its germ layers become in adult humans.
15. Germ Cells in Humans: Definition & Concept
Although you may think germ cells have something to do with getting sick, this is 100% not true. This lesson defines germ cells and provides an overview of their processes.
16. Habituation in Animals: Definition & Example
Habituation is a simple form of learning that all animals, including people, are capable of. In this lesson, you will learn what it is, how it occurs, and why it's a big energy saver.
17. Mimicry in Animals: Definition & Examples
Living things have evolved some very unique and fascinating ways to trick predators and competitors. Mimicry is one such tactic. Learn about mimicry and explore some of the more wild and interesting examples of it.
18. Allantois: Function & Definition
The allantois can be found within the structure of an embryo, and in that way aids in the development of many organisms, including humans. In this lesson, learn about its function and definition.
19. Endoderm Layer: Definition & Derivatives
Do you know what the lungs and intestines have in common? They both actually develop from the same tissue layer in an embryo. Learn what other structures are also derived from this same embryonic layer in this lesson.
20. Polar Body: Definition, Formation & Twinning
This lesson describes polar bodies. It answers two questions: what are they, and how do they form? It then describes how twins might arise because of polar body formation.
21. Cnidaria Respiratory System
In this lesson, you will learn about the animals of the phylum Cnidaria, what a respiratory system is, and how the respiratory system of a cnidarian works. Be sure to complete the quiz after the lesson.
Earning College Credit
Did you know… We have over 79 college courses that prepare you to earn credit by exam that is accepted by over 2,000 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the GED Science: Tutoring Solution course
- GED Science - Scientific Foundations and Study Skills: Tutoring Solution
- GED Science - Atoms, Elements, and the Periodic Table: Tutoring Solution
- GED Science - Compounds and Chemical Bonds: Tutoring Solution
- GED Science - Chemical Reactions, Acids, and Bases: Tutoring Solution
- GED Science - Nuclear Energy: Tutoring Solution
- GED Science - Energy and Heat: Tutoring Solution
- GED Science - Mechanics: Tutoring Solution
- GED Science - Sound and Light Waves: Tutoring Solution
- GED Science - Electricity: Tutoring Solution
- GED Science - Magnetism: Tutoring Solution
- GED Science - Biomolecules: Tutoring Solution
- GED Science - Cell Biology: Tutoring Solution
- GED Science - The Cell Cycle and Cell Division: Tutoring Solution
- GED Science - Cellular Respiration and Photosynthesis: Tutoring Solution
- GED Science - Classification of Organisms: Tutoring Solution
- GED Science - Genetics and Evolution: Tutoring Solution
- GED Science - Anatomy & Physiology of Reproductive Systems: Tutoring Solution
- GED Science - The Circulatory, Respiratory, Digestive, Excretory, and Musculoskeletal Systems: Tutoring Solution
- GED Science - The Nervous, Immune, and Endocrine Systems: Tutoring Solution
- GED Science - Health Issues and Concerns: Tutoring Solution
- GED Science - Nutrition & Physical Activity: Tutoring Solution
- GED Science - Ecology: Tutoring Solution
- GED Science - Animal Behavior: Tutoring Solution
- GED Science - Genetic Engineering Basics: Tutoring Solution
- GED Science - Earth Science & Geology: Tutoring Solution
- GED Science - Earth's Spheres and Internal Structure: Tutoring Solution
- GED Science - Minerals and Rocks: Tutoring Solution
- GED Science - Plate Tectonics & Continental Drift: Tutoring Solution
- GED Science - Oceanography: Tutoring Solution
- GED Science - Astronomy: Tutoring Solution
- GED Science - Meteorology: Tutoring Solution
- GED Science - Weather and Storms: Tutoring Solution
- GED Science - The Atmosphere: Tutoring Solution