How zebra got stripes
- 1. Natural Selection 6 January 2016
- 2. Objectives • How did the zebra get its stripes
- 3. How the Zebra got its stripes 3 theories 1. Camouflage 2. Resistant to tsetse fly attack 3. Confuse predators Pair share: why are stripes useful for zebras? How Zebra Got His Stripes - YouTube.flv
- 4. Recent research Method • In a fly infested region • Trays were painted 3 patterns: 1. Black 2. White 3. Black and White Stripes Results Fewest flies landed on striped zebras Conclusion/diskussion • It is thought that the flies are attracted to horizontal patterns in the light • The stripes disrupt these and so the flies are not attracted to them
- 5. Use key natural selection words to suggest how zebra got stripes • The words provided may be used as many times as you like or not at all.
- 6. Now suggest how zebras got their stripes using the camouflage theory • Zebras are preyed on by lions. • Use the tsetse fly theory to help you. • Make sure you use the key words
Editor's Notes
- #2: d) Studying the similarities and differences between organisms allows us to classify living organisms into animals, plants and microorganisms, and helps us to understand evolutionary and ecological relationships. Models allow us to suggest relationships between organisms.
- #5: What did they do to make it reliable? This research has been carried out once. What would you recommend to check it?