Category Archives: population genetics

Sweptaway – Part 1

Brace yourselves for a series of new posts on selection, especially with articles from the special Molecular Ecology issue on “Detecting selection in natural populations: making sense of genome scans and towards alternative solutions” starting to roll out! Selective sweeps … Continue reading

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Posted in adaptation, evolution, genomics, mutation, population genetics, selection, speciation, theory | Tagged , , , , , | Leave a comment

And who made your beer?

In the spirit of it being almost Friday, and while we’re on the topic of your favorite beverages – perhaps wine puts you to sleep, couldn’t care less where it came from, but prefer the bitterness of lager beers at your … Continue reading

Posted in adaptation, evolution, genomics, natural history, next generation sequencing, phylogenetics, population genetics, selection, speciation, yeast | Tagged , , , , | 1 Comment

Where’s your wine from?

Human-mediated selection of yeast cultures has played a huge role in the development of numerous unique strains of Sacchromyces cerevisiae, often attributed to production of a wide variety of wines the world over. Previous studies have indicated a single domesticated … Continue reading

Posted in domestication, evolution, genomics, horizontal gene transfer, microbiology, Molecular Ecology, the journal, next generation sequencing, phylogenetics, phylogeography, population genetics, STRUCTURE, yeast | Tagged , , , | 1 Comment

What’s the most replicated finding in population genetics?

DrugMonkey tells a tale of a specific finding in addiction research — that rats provided with an intravenous drip of cocaine solution will push a lever to self-administer the drug — which has been replicated countless times over the decades. … Continue reading

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Notes from Edmonton and #Botany2015

As noted previously, I broke with my usual habit and skipped the Evolution meetings this year. Instead, I attended Botany 2015, a joint meeting of multiple U.S. and Canadian plant-focused scholarly societies held in Edmonton, Alberta — I’d never been … Continue reading

Posted in bioinformatics, conferences, genomics, natural history, phylogenetics, plants, population genetics | Tagged | 1 Comment

Selection scans, and the genomics of adaptive/maladaptive introgression

Natural selection, and the adaptive evolution of hybrid reproductive incompatibilities post divergence are known to be major drivers of speciation. At the phenotype level, these manifest as fitness differences between introgressing populations. At the genomic level, speciation “genes” or “islands” … Continue reading

Posted in adaptation, Coevolution, evolution, genomics, Molecular Ecology, the journal, mutation, natural history, population genetics, selection, speciation, theory | Tagged , , , , | Leave a comment

PCA of multilocus genotypes in R

An earlier post from Mark Christie showed up on my feed on calculating allele frequencies from genotypic data in R, and I wanted to put together a quick tutorial on making PCA (Principal Components Analysis) plots using genotypes. I used … Continue reading

Posted in bioinformatics, genomics, howto, population genetics, R, software | Tagged , , | 4 Comments

Who came first – the Paleo- or Native American?

In yet another infamous Science vs Nature race, two studies published this Tuesday toss more cans of worms at the ongoing debate about the founding of the Americas – with disparate findings. Uh oh. Skoglund et al. Nature (2015) Genetic … Continue reading

Posted in genomics, next generation sequencing, Paleogenomics, population genetics | Tagged , , , , | 2 Comments

Dozens of talks from the Evolution 2015 meetings are on YouTube

If, like me, you didn’t make it to the 2015 Evolution meetings — maybe the logistics of a trip to Brazil were beyond your financial and/or temporal means — you can make up for it with the big cache of … Continue reading

Posted in community, conferences, phylogeography, population genetics | Tagged | 3 Comments

Dispersal by land or by sea

Here, we compare and contrast the traits and selective forces influencing the evolution of dispersal in marine and terrestrial systems. From this comparison, a unifying question emerges: when is dispersal for dispersal and when is dispersal a by-product of selection … Continue reading

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