Explaining DNA fingerprints

Discussion of all aspects of biological molecules, biochemical processes and laboratory procedures in the field.

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Should DNA fingerprints be available to the public?

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Cross Country Runner
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Explaining DNA fingerprints

Post by Cross Country Runner » Thu May 05, 2005 12:30 pm

Today in school my biology teacher was talking about DNA fingerprinting and he explained the basics. First the DNA is broken up by restiction enzymes. The mixture of broken DNA is placed in a well on a gel pad. Then the Electric current is run through the gel pad. The current flows from negative to postive. The shortest fragments of DNA are towards the postive source and the longer fragments are near the negative end. that forms a DNA fingerprint through a series of bars.

However I was wondering what the enzymes are made up of. Plus if anyone has anyother infomation please reply.
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mith
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Post by mith » Thu May 05, 2005 8:22 pm

enzymes are made of proteins, we have a good dictionary if you look on the top right hand corner of the page.
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thank.darwin
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Re: Explaining DNA fingerprints

Post by thank.darwin » Fri May 06, 2005 10:09 am

Cross Country Runner wrote: First the DNA is broken up by restiction enzymes



http://users.rcn.com/jkimball.ma.ultran ... zymes.html
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MrMistery
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Post by MrMistery » Fri May 06, 2005 7:07 pm

Correction, mithrill: enzymes are proteins, they are made of aminoacids
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mith
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Post by mith » Fri May 06, 2005 8:19 pm

ah, that's right.
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restriction enzymes

Post by ac83 » Sat May 07, 2005 3:50 am

or did he mean what restriction enzymes do...?
they have recognition sites and will cut the DNA at places which matches these recognition sequences.

This is probably repeating the stuff in the link thank.darwin provided though

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