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
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.
What did they do to make it reliable?
This research has been carried out once. What would you recommend to check it?