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Old 04-19-2012, 10:44 PM
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Synthetic DNA Created

Synthetic DNA Created, EVOL-VES on Its Own

Christine Dell'Amore
National Geographic News
Published April 19, 2012

Step aside, DNA—new synthetic compounds called XNAs can also store and copy genetic information, a new study says.


And, in a "big advancement," these artificial compounds can also be made to E-VOLE in the lab, according to study co-author John Chaput of the Biodesign Institute at Arizona State University. (See "Evolution vs. Intelligent Design: 6 Bones of Contention.")


Nucleotides, the building blocks of DNA are composed of four bases—A, G, C, and T. Attached to the bases are sugars and phosphates. (Get a genetics overview.)

First, researchers made XNA building blocks to six different genetic systems by replacing the natural sugar component of DNA with one of six different polymers, synthetic chemical compounds.

The team—led by Vitor Pinheiro of the U.K.'s Medical Research Council Laboratory of Molecular Biology—then ****ed enzymes, called polymerases, that can make XNA from DNA, and others that can change XNA back into DNA.

This copying and translating ability allowed for genetic sequences to be copied and passed down again and again—artificial heredity.

Last, the team determined that HNA, one of the six XNA polymers, could respond to selective pressure in a test tube.

As would be expected for DNA, the stressed HNA EV0LVED into different forms.


http://news.nationalgeographic.com/n...-life-science/



Last edited by Administrator : 04-20-2012 at 09:58 PM.
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Old 04-20-2012, 09:56 PM
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Re: Synthetic DNA Created

WOW AWESOME NEWS. SO COOL! Thanks mumbles you are always in the "Know"!
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Last edited by Administrator : 04-20-2012 at 10:04 PM.
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