how extract DNA from a Strawberry at home

In order to study DNA scientists have to

extract it from cells

there are many DNA extraction kits

available for scientists to use in the lab

but they all work in roughly the same way

This experiment lets you make your own

DNA extraction kit from common household materials

okay, lets check it out

Here is what you need

Isopropyl alcohol or rubbing alcohol

dish soap, salt, water, plastic bag

beaker or test tube

or you can use a small clear glass jar

measuring cups, strainer, tweezers and safety glasses

Step 1: put the isopropyl alcohol or rubbing alcohol in

the freezer to chili it

Step 2: Measure 100 ml of water then add

10 ml of dish soap and half of teaspoon

salt to the water and mix it up

this will be your extraction liquid

Step 3: put the strawberry in the plastic bag

and then add the extraction liquid you just

made to the plastic bag too

Step 4: Remove as much air as possible

and seal the bag

after that mash the strawberry with your

hands for 2 minutes until there are no big pieces

this is what it will look like

Step 5: use a strainer to separate the liquid

from the strawberry pulp

Step 6: Now, transfer the liquid to a small beaker

or a small clear glass jar

Step 7: add 5 ml of iced Isopropyl alcohol

or Rubbing alcohol and wait for a few minutes

the alcohol will form a layer on top of

the strawberry juice

Step 8: okay, now you should see stringy

whitish stuff collecting between two layers of liquid

this is DNA !

you can gently pull the DNA out with the tweezers

the detergent I used caused the cells

to pop open or lyse

this releases the DNA into the solution

and the alcohol causes the DNA

to precipitate out of the solution

you can do this experiment on most any living thing

try this experiment using other fruits, vegetables

or soft meats like chicken liver

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