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How is dna profiles are built

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Separate white and red blood cells with a centrifuge.
Extract DNA nuclei from the white blood cells. ...
Cut DNA strand into fragments using a restriction enzyme.
Place fragments into one end of a bed of agarose gel with electrodes in it. ...
Use an electric current to sort the DNA segments by length.

I’ve also added a picture as well.
How is dna profiles are built-example-1
User Axel Heer
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Step-by-step explanation:

there is the answer hope this is right

How is dna profiles are built-example-1
User Wolfgang Ziegler
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