Mutations and Variation

What You'll Learn

Genetic variation within a population is essential for evolution. Variation comes from mutations, sexual reproduction, and gene flow between populations.

Key Words

trait
dominant
recessive

Materials Needed

index cards
markers
ruler
scissors
microscope (or magnifying glass)

Safety First

Keep small objects away from young children.
Work in a well-ventilated area when using vinegar or other strong-smelling substances.

Steps

Step 1 — Read

Read and learn: Genetic variation within a population is essential for evolution. Variation comes from mutations, sexual reproduction, and gene flow between populations.

Step 2 — Do

Gather your materials and set up your workspace.

Step 3 — Observe

Watch carefully for any changes and note the time.

Step 4 — Record

Create a data table to organize your measurements.

Check Your Understanding

Question 1

1 of 3

What does DNA stand for?