Category Archives: microbiology

The broom of the system: Tracking soft selective sweeps in bacteria colonizing the gut

A growing body of population genetic evidence suggests that adaptive evolutionary change often proceeds via soft selective sweeps, in which beneficial mutations on multiple genetic backgrounds—and potentially at multiple loci—all increase in frequency, but none achieve fixation. This process has … Continue reading

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Posted in adaptation, microbiology, population genetics | Tagged , , | 1 Comment

Making heatmaps with R for microbiome analysis

Arianne Albert is the Biostatistician for the Women’s Health Research Institute at the British Columbia Women’s Hospital and Health Centre. She earned a PhD from the University of British Columbia under the tutelage of Dolph Schluter before branching off into … Continue reading

Posted in howto, microbiology, R, software | Tagged , , | 49 Comments

Hitchhiking microbes

It is quite clear that humans play a major role in altering ecosystems today. Historic migration of human populations has been shown to have many interesting associated evolutionary consequences1,2. Worldwide travel makes it difficult to stop anything from going anywhere, … Continue reading

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What we’re reading

As we head into the first weekend of the new year, here’s a few things we’ve seen that might be worth your screen-time: In the journals Nicholson, W.L., Krivushin, K., Gilichinsky, D. & Schuerger, A.C. 2012. Growth of Carnobacterium spp. … Continue reading

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