72

Lesson 72 of 84 ยท Evolution

Experimentโญ 30 XP

Genetic Variation in Populations (Part 4)

๐ŸงชLab Brief #72

Evolution.

๐ŸŽฏ Your mission

Set it up. Test it. Be amazed.

โšก The twist

Nature loves to surprise the careful watcher.

๐Ÿคฏ

Mind = Blown

๐Ÿ”ฌ The more you look, the more nature shows you.

๐Ÿ”ฎ

Make a hypothesis first

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

What You'll Learn

DNA (deoxyribonucleic acid) carries the genetic instructions for building and maintaining an organism. It is shaped like a twisted ladder called a double helix.

Key Words

  • adaptation
  • fossil record

Materials Needed

  • ruler
  • scissors
  • microscope (or magnifying glass)
  • slides
  • onion skin

Safety First

  • Protect your work surface with newspaper or plastic.
  • Adult supervision recommended.

Steps

Step 1 โ€” Read

Study the diagram and label the parts you recognize.

Step 2 โ€” Do

Compare and contrast prokaryotic and eukaryotic cells. Create a Venn diagram showing their similarities and differences.

Step 3 โ€” Observe

Observe what happens and describe it in detail.

Step 4 โ€” Record

Record your observations in your science journal with measurements and descriptions.

Check Your Understanding

Question 1

1 of 3

What is the shape of DNA?

๐ŸŒ

Where you see this in real life

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

๐Ÿ†

Stretch Challenge

Try this in real life this week.

Try one experiment in real life this week โ€” even a tiny one.

๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘ง

For the dinner table

โ€œWhat's the most surprising thing you learned today?โ€

๐ŸŽฏ

Next Smart Experiment

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

๐Ÿ”ญShare card

Share this experiment

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

๐Ÿ–จ๏ธ

Checkout complete lesson on Evolution for 7th Grade

Get the full Evolution track as a printable PDF โ€” all lessons, worksheets, and answer keys.

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Genetic Variation in Populations (Part 4) โ€” Evolution | 7th Grade Science | LittleActivity | LittleActivity