Lesson: Extract DNA from a Banana
Posted on January 23rd, 2011 by ASEE
In this lab activity, students in grades 5 through 9 use a salt/detergent mixture to make a piece of a banana water soluble. Then they add cold ethanol to precipitate a froth of white DNA from the solution. With careful technique the slender threads are wound onto a glass rod for observation of deoxyribonucleic acid, the master code or blueprint of all organisms.
Filed under: Grades 6-8, Grades 9-12, Grades K-5, Lesson Plans | 1 Comment »
Tags: Bioscience, Lesson Plan, Science Experiments
