In an exciting scientific endeavour, Year 8 students have taken a hands-on approach to biology by learning how to extract DNA from strawberries during their Science lesson on Wednesday, 14 May 2025. This innovative lesson sparked students' interest in genetics and the microscopic world of DNA.
Students were introduced to the basic concepts of DNA - deoxyribonucleic acid - and its crucial role as the blueprint of life.
Strawberries are an ideal choice for this experiment. They have large genomes and are octoploid, meaning they have eight copies of each chromosome, making the DNA extraction process visible and engaging for the students.
Year 8 began their experiment by mashing fresh strawberries in plastic bags to break down the cell walls. They then added a mixture of dish detergent, salt, and water, which helps to dissolve the cell membranes and release the DNA into the solution. After carefully filtering the mixture through a coffee filter to remove solid particles, the pupils added alcohol, which caused the DNA to precipitate and become visible as a cloudy, stringy substance.
This engaging activity not only brings text book concepts to life but also encourages critical thinking and problem-solving skills. By participating in the DNA extraction process, students could better understand the scientific method and the practical applications of genetics. As the students continue their studies, experiences like these will undoubtedly encourage some to pursue careers in science and technology.
This experiment can be recreated at home using common household materials - for all you need and a step by step guide please follow this link - https://www.genome.gov/sites/