DNA structure: AT and GC bonds (IMAGE)

University of Maryland Baltimore County

DNA structure: AT and GC bonds

Caption

DNA is made up of adenine-thymine (AT) bonds and guanine-cytosine (GC) bonds. The frequency of each type of bond differs substantially across bacterial species. A new study uses this quirk of bacterial genetics to determine the origin and spread of various genes for antibiotic resistance. The new technique is so fast and inexpensive that it could be applied at regular intervals to track changes to bacterial genomes over time and detect emerging antibiotic resistance threats.

Credit

National Human Genome Research Institute

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No restrictions.

License

Public Domain

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