This is what your DNA looks like
Extracting DNA from strawberries is a classic demonstration used in biochemistry and biology classrooms that allows students to see DNA with the naked eye. The red layer at the bottom of this test tube is a mixture of mashed strawberries, water, table salt, and dish detergent. The soapy detergent helps dissolve the membranes of the fruit’s cells, releasing their DNA. The salt then binds to the negatively charged DNA strands. Added rubbing alcohol causes the DNA-salt complex to clump up into visible strands.—Craig Bettenhausen
Submitted by Amy Davis Roth.
Credit: Amy Davis Roth