Meiosis: Making Sex Cells (Part 4)

What You'll Learn

Meiosis is a special type of cell division that produces sex cells (gametes) with half the normal number of chromosomes. When egg and sperm unite, the full number is restored.

Key Words

chromosome
mitosis
meiosis

Materials Needed

tape
index cards
markers

Safety First

Protect your work surface with newspaper or plastic.
Adult supervision recommended.
Do not taste any materials.

Steps

Step 1 — Read

Read about Crosscutting Concepts and write down three key facts.

Step 2 — Do

Create a Punnett square to predict the offspring of two parents. Use a trait like eye color or seed shape. Calculate the probability of each outcome.

Step 3 — Observe

Compare the before and after states.

Step 4 — Record

Write your conclusion: did the results match your hypothesis? What would you change next time?

Check Your Understanding

Question 1

1 of 3

What is meiosis?