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Category Archives: quantitative genetics
Recent reading: 18 March 2022
In the last fortnight, I saw one long-gestating project finally published, and got to be a small part of the publication of what’s arguably the biggest-ever study of adaptive evolution. I subjected an SUV full of students to a botany-themed … Continue reading
Posted in ecology, evolution, journal club, quantitative genetics
Tagged cowpea, diversity in STEM, g matrix, Ipomoea hederacea, symbiosis
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A Highlight of Molecular Ecology outside of Academia
I’ve recently made a career change. Actually, I’m not even sure whether to call it that, or the next step of a natural, if meandering progression of a scientist not on the academic career path. Even though I see more and … Continue reading
The slow, and sometimes incomplete, journey to diploidy
Whether you are reading this as a plant, an animal, or fungus, it is likely that some ancestor of yours doubled up on genomes. However, it is likely that these extra genomes disappeared over evolutionary time. What gives? Where are those extra … Continue reading
Posted in evolution, genomics, quantitative genetics, speciation
Tagged Bob Ross, polyploidy, whole genome duplication
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Are genetic drift and inbreeding the same thing?
Does it ever happen to you that the more you try to understand something, the more difficult to understand it turns out to be? Recently, I’ve had such a problem with two of the very basic microevolutionary phenomena – genetic … Continue reading
A different perspective on genetic architecture
As an ecological geneticist, I’m constantly reminded how much we don’t understand about the genetic nature of adaptive variation. Sure, we have lots of examples of genes/pathways/regions that seem to be responsible for adaptation, but we don’t really know if … Continue reading
A molecular how-to for hibernating this winter
As the academic semester ends, I see the tell-tale signs of the upcoming holiday hibernation. The weary eyes of teaching assistants peeking over piles of final exams. Students who may have mentally been on break before finals even started. A little … Continue reading
How many genes does it take to make a new species?
Three-spined sticklebacks are speciation machines. When retreating glaciers exposed lakes and rivers around the coasts of northern North America and Eurasia, these armor-plated little fish colonized the new freshwater habitats from the ocean, and adapted to the threats and resources … Continue reading
Posted in genomics, population genetics, quantitative genetics, speciation
Tagged ecological speciation, stickleback
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People behind the Science: Dr. Montgomery Slatkin
To honor his recent election to the National Academy of Sciences, we’re featuring Dr. Montgomery Slatkin of the University of California, Berkeley. Dr. Slatkin is known for his work in theoretical population genetics, in particular with regard to gene flow … Continue reading
Posted in interview, population genetics, quantitative genetics
Tagged Montgomery Slatkin
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Selection keeps an extra-close eye on multi-functional genes
Genes that have roles in multiple traits—pleiotropic genes—have long been thought to be under stronger selection as a result of those multiple functions. The basic logic is that, when a gene produces a protein that has a lot of different … Continue reading
Posted in adaptation, genomics, quantitative genetics
Tagged Drosophila melanogaster, mutation accumulation
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