Natural Selection: Survival of the Fittest

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

mitosis
trait
dominant

Materials Needed

markers
ruler
scissors

Safety First

Do not look directly at the sun or bright lights.

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 3

What is selective breeding?