About This Chapter
Who's It For?
Anyone who needs help learning or mastering speciation and speciation barriers material will benefit from the lessons in this chapter. There is no faster or easier way to learn about speciation and speciation barriers. Among those who would benefit are:
- Students who have fallen behind in understanding hybrid zygote abnormalities or spatial isolation
- Students who struggle with learning disabilities or learning differences, including autism and ADHD
- Students who prefer multiple ways of learning science (visual or auditory)
- Students who have missed class time and need to catch up
- Students who need an efficient way to learn about speciation and speciation barriers
- Students who struggle to understand their teachers
- Students who attend schools without extra science learning resources
How It Works:
- Find videos in our course that cover what you need to learn or review.
- Press play and watch the video lesson.
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with short quizzes.
- Verify you're ready by completing the Speciation and Speciation Barriers chapter exam.
Why It Works:
- Study Efficiently: Skip what you know, review what you don't.
- Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
- Be Ready on Test Day: Use the Speciation and Speciation Barriers chapter exam to be prepared.
- Get Extra Support: Ask our subject-matter experts any question on speciation and speciation barriers. They're here to help!
- Study With Flexibility: Watch videos on any web-ready device.
Students Will Review:
This chapter helps students review the concepts in a speciation unit of a standard biology course. Topics covered include:
- Allopatric and geographic speciation
- Prezygotic reproductive barriers and temporal isolation
- Postzygotic reproductive barriers and low-hybrid viability
1. Speciation I: Allopatric and Sympatric Speciation
Discover the definition of a species and learn more about how species split. Find out common terms related to the splitting of species and study what role polyploidy plays in the development of a species.
2. Speciation II: Prezygotic Barriers
We may take for granted why animals choose to mate with other animals of similar appearance, but it's not that simple. There are actually biological barriers to reproduction that can prevent even seemingly closely related species from reproducing. This lesson looks at one such category of hindrances, prezygotic barriers, which make fertilization impossible.
3. Speciation III: Postzygotic Barriers
Do flying hamsters represent a separate species from your run-of-the-mill hamsters? We'll get to the bottom of this by performing crosses between the two hamster types. You'll explore postzygotic reproductive barriers and their possibly tragic consequences.
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