Genes and Traits (Part 3)

What You'll Learn

Natural selection is the process where organisms with traits better suited to their environment survive and reproduce more successfully. Over time, this drives evolution.

Key Words

DNA
gene
chromosome

Materials Needed

iodine stain
paper
colored pencils
coins (for Punnett squares)

Safety First

Do not mix unknown chemicals together.
Tie back long hair before starting the experiment.

Steps

Step 1 — Read

Read and learn: Natural selection is the process where organisms with traits better suited to their environment survive and reproduce more successfully. Over time, this drives evolution.

Step 2 — Do

Conduct the experiment by following the instructions.

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 3

What is natural selection?