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Klemen Žiberna
6.9.2002
Isolation of DNA from a tomato
1. Introduction
Living beings have DNA in their cells. Each cell contains approximately 2 meters of
DNA. The reason for doing this experiment is to observe these long and clumpy DNA
molecules.
We will show how you can extract genetic material from any fruit or vegetable seed
and then prove, that this substance is really DNA.
AIM:
Isolating and then proving the existence of DNA in the tomato cell.
2. Research question
Does tomato have DNA in his cells?
3. Hypothesis
Tomato is a fruit of a plant. Their cells are eukaryotic cells. All eukaryotic cells
contain nucleus with DNA, therefore tomato cells contain DNA.
4. Variables
Dependent variables:
 quantity of DNA
Controlled variables:
 amount of tomato