Name: ________________________________________________
How Did the Guppy Get His Color
Google Slides: https://docs.google.com/presentation/d/1I2MMhS7eDBnNpkqsAydIYBi_ldqcvvNcqrubbTeyTnY/edit?usp=sharing
1. Watch the video (https://youtu.be/HuMj0OqwJWg . Write down all of the
color variations among the guppies shown.
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2. Discuss: Do you think these guppies are the same species? How could you find out?
3. Locate Trinidad on a map. What continent is located nearby?
4. Examine the guppies shown below, they are representative of guppies Endler observed. How do
they differ from the aquarium guppies you saw earlier?
5. Guppies exhibit SEXUAL DIMORPHISM. Define sexual dimorphism
6. In the photo shown, 1 guppy is a male and 2 are female. How can you tell the difference?
7. Consider these separate pools. What environmental features might be different in each pool?
8. Look at the image, what predator(s) were found in the low streams?
9. Both of these guppies are male. Which one do you think came from the high predation stream and
which from the low predation stream. Explain your choice.
10. Write a hypothesis for Endler’s question.
11. Summarize trends seen in the data.
12. Describe what happened to the X and R groups compared to the original population (C).
From
http://www.jstor.org/stable/2408316