Category Archives: evolution

Population genomics finds veritas in the demographic history of vino

One of the more, hah, fruitful applications of genomic data has been in crop and livestock improvement. Biologists know that domesticating plants and animals for human use has involved powerful artificial selection — usually inadvertent at first, then intensive and … Continue reading

Share
Posted in domestication, evolution, genomics | Tagged , | Leave a comment

We have the technology. Is sequencing getting better, smaller, faster?

Okay, I know some version of the phrase “recent developments in rapid and affordable sequencing have made blah blah blah possible…” is something you’ve probably read 10,000 times. However, third-generation sequencing platforms have turned out to be pretty darn astounding. … Continue reading

Share
Posted in bioinformatics, evolution, fieldwork, genomics, methods, next generation sequencing | Tagged , , , | Leave a comment

DNA sequence data shows that this “living fossil” isn’t so fossilized after all

Living fossils are a tricky concept for evolutionary biology. In principle it seems simple: living organisms that closely resemble creatures seen in the fossil record going back millions of years. Usually they’re a single representative of a fossil record containing … Continue reading

Share
Posted in adaptation, evolution, species delimitation | Tagged , , , | Leave a comment

Habitat-matching dispersal facilitates local adaptation

Migration disrupts local adaptation. At least, this is the first reaction I have when I consider these two processes. In fact, my initial thought is almost always: how strong does selection have to be to overcome gene flow? Gene flow … Continue reading

Share
Posted in adaptation, evolution, Uncategorized | Tagged , , | Leave a comment

In the aftermath of fire, bluebird species boundaries may blur

One of the most clear-cut reasons that species evolve to fill different ecological niches is competition. Two otherwise similar species that use the same resources experience strong selection favoring the use of less-similar resources, if they have the option. The … Continue reading

Share
Posted in birds, evolution, hybridization, natural history, population genetics | Tagged , | Leave a comment

Experimental harvesting reduces gene expression variation

Human activities represent unique selective pressures for natural populations. This is especially true for fish species where we routinely harvest individuals from the wild, i.e., through fishing. It has been recognized for some time that overfishing can result in population … Continue reading

Share
Posted in adaptation, conservation, evolution, genomics, transcriptomics | Tagged , | 1 Comment

Non-model organisms are so hot right now

What makes a model organism? Well, as the name suggests, they are widely studied and have been adapted to a vast array of common genetic techniques. A few of the most often utilized organisms, which you are most likely already … Continue reading

Share
Posted in bioinformatics, domestication, evolution, genomics, next generation sequencing, yeast | Tagged , | Leave a comment