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Lesson 68 of 84 · Inheritance and Traits
ExperimentDarwin and the Galapagos (Part 4)
What You'll Learn
Charles Darwin observed that finches on different Galapagos Islands had different beak shapes suited to their food sources. This helped him develop the theory of natural selection.
Key Words
- fossil
- species
Materials Needed
- scissors
- microscope (or magnifying glass)
- slides
- onion skin
- iodine stain
- paper
Safety First
- Keep small objects away from young children.
Steps
Step 1 — Read
Read about Inheritance and Traits and write down three key facts.
Step 2 — Do
Model mitosis using pipe cleaners as chromosomes. Show each phase: prophase, metaphase, anaphase, and telophase.
Step 3 — Observe
Look for patterns in your observations.
Step 4 — Record
Make a graph or chart showing your results.
Check Your Understanding
Question 1
1 of 3Who is known for the theory of natural selection?