Why some microbial genes are more promiscuous than others

Wednesday, March 16, 2011 - 16:31 in Biology & Nature

While most organisms get their genes from their parents, bacteria also regularly pick up genes from more distant relatives. This ability to "steal" snippets of DNA from other species is responsible for the rapid spread of drug resistance among disease-causing bacteria. A new study of more than three dozen species - including the microbes responsible for pneumonia, ulcers and plague -- settles a longstanding debate about why bacteria are more likely to steal some genes than others. Bacteria are more likely to adopt 'loner' genes than genes that are well-connected, the study finds.

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