The Domains of Life
The Domains of Life
How the evolutionary tree branches over time forms the basis for biological classification. As our understanding of evolutionary history has improved, classification has gone from a two kingdom system (plants and animals), to five kingdoms (plant, animal, fungi, protist, and monera – the kingdom of prokaryotic cells), the classification found in many biology textbooks. Molecular techniques have now clarified the early branching of life, resulting in a useful new overview that splits life into three domains: Archaea (bacteria-like in appearance, but with different biochemistry), Bacteria, and Eucarya, the domain of organisms having cells with nuclei and membrane-bound organelles. This program introduces the three domains and focuses on the main events in the evolution of eukaryotic cells:
A cell containing DNA becomes the ancestor for the three existing lines of life.
Anatomy of the bacterial cell and the roles bacteria play in the biosphere.
Complex nucleated [27 minutes]
Information For Teachers
- Grade Levels
- Curricular Areas
- Science & Technology
- Series Length
- 1 episodes
- Average Episode Length
- 27 minutes
- Record Rights
- Recording/duplication allowed as long as IPTV broadcasts the series. If you miss the broadcast, contact your AEA for copies.
- Visit the Website for Teacher Resources
Visit the IPTV Education website to access timely, relevant resources for your classroom.
Program Description: The Domains of Life updates the five kingdoms classification scheme with the latest understanding of life’s organization based on DNA, fossil, and biochemical evidence. Concise animations and superb microscope footage of primitive cells show events that shaped life as we know it today. This program addresses the National Science Standards regarding early evolution and the classification of life.
All Upcoming Episodes
There are no broadcasts currently planned. Please check back for future broadcast dates.
These episodes of The Domains of Life aired in the last few months on Iowa Public Television.