Adaptations Over Generations

What You'll Learn

Cells are the basic units of life. All living things are made of one or more cells. Plant cells have cell walls and chloroplasts that animal cells lack.

Key Words

allele
cell
nucleus

Steps

Step 1 — Read

Review the background information on Crosscutting Concepts before starting.

Step 2 — Do

Model mitosis using pipe cleaners as chromosomes. Show each phase: prophase, metaphase, anaphase, and telophase.

Step 3 — Observe

Draw a detailed diagram of what you observe.

Step 4 — Record

Write a conclusion: what did your results show? Did they match your prediction?

Check Your Understanding

Question 1

1 of 3

What is the basic unit of life?