DNA,  RNA and Protein synthesis 

We are studying the structure of DNA. 

DNA extraction from strawberry. 

Materials needed: Zip lock bag, two strawberries, 30 ml water, teaspoon dishwashing liquid (detergent), 2 ml salt, sieve

Step 1: Place strawberry in zip lock and squish. 

Step 2: Mix salt, water and detergent.  Add to zip lock.  Mix with strawberry mush. 

The detergent dissolves the phospholipid layers of the membranes. The salt makes the DNA less hydrophilic.

Step 3: Filter the liquid into the glass beaker using the sieve. 

Add approximately 2 cm cold methylated spirits slowly on top of the strawberry extract.

Use toothpicks to twirl the DNA out of the methylated spirits.

Building a DNA model





noun, ( used with a singular verb)
1. Biology. the science of heredity, dealing with resemblances and differences of related organisms resulting from the interaction of their genes and the environment.
Dictionary.com Unabridged. Based on the Random House Dictionary, © Random House, Inc. 2016.

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