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Lesson 65 of 84 · Genetics
ExperimentNatural Selection: Survival of the Fittest (Part 4)
What You'll Learn
Adaptations develop over many generations through natural selection. Structural adaptations (like thick fur), behavioral adaptations (like migration), and physiological adaptations (like venom production) all help survival.
Key Words
- meiosis
- trait
Materials Needed
- ruler
- scissors
- microscope (or magnifying glass)
- slides
- onion skin
Safety First
- Work in a well-ventilated area when using vinegar or other strong-smelling substances.
- Dispose of materials properly after the experiment.
- Handle glass items carefully to avoid breakage.
Steps
Step 1 — Read
Read the introduction and identify the main idea of this lesson.
Step 2 — Do
Research one genetic disorder. Create an infographic showing its cause, symptoms, and how it is inherited.
Step 3 — Observe
Observe what happens and describe it in detail.
Step 4 — Record
Record your observations in your science journal with measurements and descriptions.
Check Your Understanding
Question 1
1 of 3What is selective breeding?