St. Mary's Dominican High School

The Science Behind Our Food

Posted on

Conducting a strawberry DNA Extraction experiment, students in Biology classes observed the DNA in the food they eat. Strawberries yield more DNA than any other fruit. The fruit is octoploid, which means it has eight copies of each type of chromosome. After pulverizing whole strawberries into a liquid form, students poured the liquid into a test tube and added liquid soap to break up the cell membrane. Ethanol was added to the strawberry extract and worked like a magnet to pull out the DNA strands that are fine white strands.

strawberryDNA_086

strawberryDNA_098

strawberryDNA_106

strawberryDNA_120

strawberryDNA_161

Sponsored By Dominican Sisters of Peace