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Lesson 2 of 3 · Genetics

Experiment30 XP

Punnett Squares

🧪Lab Brief #2

Punnett Squares.

🎯 Your mission

Set it up. Test it. Be amazed.

⚡ The twist

Nature loves to surprise the careful watcher.

🤯

Mind = Blown

🔬 The more you look, the more nature shows you.

🔮

Make a hypothesis first

Before you start: write down what you think will happen, and why.

What You'll Learn

Punnett squares are tools for predicting the probability of offspring inheriting particular traits. They show all possible combinations of alleles from two parents.

Key Words

Tap a word to see its definition.

Materials Needed

  • colored pencils

Safety First

  • Have an adult check your set-up before you start, and tidy everything away afterwards.

Steps

Step 1Read

Look at the vocabulary words and write a definition for each in your own words.

Step 2Do

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 3Observe

Look for patterns in your observations.

Step 4Record

Make a graph or chart showing your results.

Check Your Understanding

Question 1

1 of 3

What is a Punnett square used for?

🌍

Where you see this in real life

This shows up in your everyday life more than you'd think.

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Stretch Challenge

Try this in real life this week.

Try one experiment in real life this week — even a tiny one.

👨‍👩‍👧

For the dinner table

What's the most surprising thing you learned today?

🎯

Next Smart Experiment

We'll pick an experiment that matches exactly how you're thinking right now.

🔭Share card

Share this experiment

Send it to a parent who's looking for a 10-minute kitchen science win.

Ready?

Punnett Squares

Set it up. Test it. Be amazed.

Full screen — no distractions

🖨️

Checkout complete lesson on Genetics for 8th Grade

Get the full Genetics track as a printable PDF — all lessons, worksheets, and answer keys.

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Punnett Squares — Genetics | 8th Grade Science | LittleActivity