Category Archives: population genetics

What’s left of the black rhino’s genetic diversity?

With the current poaching epidemic we might lose rhinos before we even have time to get to know them. Luckily, the day has come and thanks to Yoshan Moodley, Mike Bruford and their team we know have a pretty good … Continue reading

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The seeds of speciation

You don’t have to get very far into an evolution textbook before you bump into Darwin’s finches, the birds descended from South American finches that colonized the Galapagos Islands and “radiated” into an array of different species, each with a … Continue reading

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Free to go but required to stay: contrasting views on mitochondrial relationships

Ever since a bacterium found itself mysteriously engulfed in our eukaryotic ancestor, things have been, uh, complicated regarding our two genomes. One is big, one is small. One is circular, one is linear. One is numerous in each cell, the … Continue reading

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Diving into the inbreeding depression

This post is going to be a little melodramatic, but I hope that despite all the reading on inbreeding depression, you won’t get depressed. As the media finally started feeding us all the catastrophic news about the impact of global … Continue reading

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Unbalanced population sampling and STRUCTURE

The utility and intuition offered by the program STRUCTURE, and more generally, the ‘admixture’ model of Pritchard et al. (2000) are unquestioned – with tens of thousands of citations, it retains its lead among the most popular population genetics software. … Continue reading

Posted in bioinformatics, genomics, howto, methods, population genetics, software, STRUCTURE | Tagged , , | 1 Comment

For these birds, isolation-by-distance is (almost) all in the family

Isolation by distance is one of the most fundamental processes of molecular ecology. In any finite population, the frequency of a genetic variant will change from generation to generation due to random sampling effects, which we call genetic drift. In … Continue reading

Posted in natural history, pedigree, population genetics | Tagged | 1 Comment

Artificial connectivity … have we overlooked the native range?

Invasive species are problematic throughout the world’s ecosystems, down even to their very name which incites heated debates. Every month, studies are published that describe the genetic structure and gene flow of non-native species in their introduced ranges. Often, these … Continue reading

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