DNA Activity - DNA Extraction Lesson Plan, Fun Classroom Science for Kids

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Fun Biology Lesson Plans and Activities for Kids

DNA Activity DNA Extraction Activity

This simple DNA extraction lesson plan lets students try a fun DNA activity while they learn more about this important biology topic.

Students will try extracting DNA from a banana by following the simple instructions and can take the activity further with the use of a microscope. Give it a try and enjoy fun classroom science for kids.

Introduction:

Found in the shape of a double helix, DNA or deoxyribonucleic acid as it is otherwise known, provides the blueprint for various forms of life. This includes humans, monkeys and even things like bananas. Let's try a fun activity that involves extracting DNA from a banana.

Activity:

Blend one banana together with 1 cup of water until smooth.
Fill tubes with around 15mls of the smooth banana and water solution, making one for each student in your class.
Add around 10 drops of detergent to the banana mixture in the tubes.
Put a lid on the tubes and gently shake them (this will break open the cells and release the DNA).
Carefully pour around 20 to 30mls of methylated spirits (also known as denatured alcohol) into the the banana mixture.
Use a straightened paperclip or similar object to fish out the gooey strands of banana DNA. Tell the students to collect them in a small tube.

After finishing:

From here the students can try looking at the DNA under a microscope. The can also try extracting DNA from other things as well.