Gee Research Blog
Write About Research – A GEE Research Blog Competition
Tue, 03 Mar 2015 15:28:43 +0000
The GEE Research blog communicates UCL science with a wider, non-specialist audience, by providing short summaries of recent research in the department of UCL Genetics, Evolution and Environment. This provides an opportunity to engage with a broad audience, including other academics, students, members of the public, and even businesses and policy-makers. It is a great […]
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Was Fermentation Key to Yeast Diversification?
Tue, 17 Feb 2015 15:30:43 +0000
From bread to beer, yeast has shaped our diets and our recreation for centuries. Recent research in GEE shows how humans have shaped the evolution of this important microorganism. As well as revealing the evolutionary origins of modern fission yeast, the new study published in Nature Genetics this month shows how techniques developed for detecting […]Read more...
Planning for the Future – Resilience to Extreme Weather
Thu, 15 Jan 2015 15:13:14 +0000
As climate change progresses, extreme weather events are set to increase in frequency, costing billions and causing immeasurable harm to lives and livelihoods. GEE’s Professor Georgina Mace contributed to the recent Royal Society report on “Resilience to Extreme Weather”, which predicts the future impacts of increasing extreme weather events, and evaluates potential strategies for improving […]
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Mon, 05 Jan 2015 11:33:21 +0000
Classifying a species as either extinct or extant is important if we are to quantify and monitor current rates of biodiversity loss, but it is rare that a biologist is handy to actually observe an extinction event. Finding the last member of a species is difficult, if not impossible, so extinction classifications are usually estimates […]Read more...
Changing Perspectives in Conservation
Thu, 18 Dec 2014 12:15:44 +0000
Our views of the importance of nature and our place within have changed dramatically over the the last century, and the prevailing paradigm has profound influences on conservation from the science that is conducted to the policies that are enacted. In a recent perspectives piece for Science, GEE’s Professor Georgina Mace considered the impacts that […]Read more...
16 April 2013
GEE/CEE Seminar on mitochondria, hybrid breakdown and the origin of species
"Consequences of rapid mtDNA evolution: compensatory coadaptation, hybrid breakdown and speciation"
Ron Burton, Professor of Marine Biology, Scripps Institution of Oceanography, University of California San Diego
Date & Time:
||Wednesday, 17 April at 5pm|
|Venue:||Medical Sciences AV Hill Lecture Theatre (map)|
|Host:||Nick Lane (Ext 31385)|
Despite its small size and limited gene content, the rapid evolution of the mitochondrial genome (mtDNA) has significant implications for the evolution of animal populations. Aerobic metabolism requires all 13 of the mtDNA-encoded proteins in addition to >70 nuclear proteins. In addition, ~100 additional nuclear proteins are required for the transcription and translation of the mtDNA and must be imported into the mitochondria. Consequently, there are many interactions between mtDNA and nucDNA that favor extensive intergenomic coadaptation. When genetically divergent populations hybridize, coadaptation can be disrupted and lead to mitochondrial dysfunction and reduced fitness (hybrid breakdown). Interpopulation crosses between populations of the copepod Tigriopus californicus provide a good example of this scenario, as hybrid breakdown is due, in large measure, to intergenomic interactions affecting mitochondrial function (manifested in reduced ATP production and increased oxidative damage). Recent work using transcriptomic analyses of both hybrid breakdown and population adaptation to thermal stress in Tigriopus will also be briefly discussed.
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