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New Retina MacBook Pros can drive 4K displays at 60Hz - when running Windows, Mac OS needs new drivers

New Retina MacBook Pros can drive 4K displays at 60Hz - when running Windows, Mac OS needs new drivers | evolution | Scoop.it
Tests by French site Mac4Ever.com found that current model Retina MacBook Pro machines can use their Thunderbolt 2 connections to drive the Sharp PN-K321 4K display at 60Hz when running Windows 8.1 with the latest NVidia drivers, rather than the 30Hz possible with OS X. This suggests that OS X will be able to do the same when Apple updates the rMBP video/Thunderbolt 2 drivers.
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The Presurfer: How The Scorpion's Venomous Sting Evolved

The Presurfer: How The Scorpion's Venomous Sting Evolved | evolution | Scoop.it
“image credit. The sting in a scorpion's tail has been connected to common defensive proteins by scientists. Defensins are proteins common to many plants and animals that fight off viral, bacterial and fungal pests.”
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How the Scorpion Got Its Sting - Answers in Genesis

How the Scorpion Got Its Sting - Answers in Genesis | evolution | Scoop.it
“A genetically engineered toxin is said to show how scorpions evolved.”
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Fried Scorpion? Osaka Restaurant Serves Up Unusual Eats - Kotaku

Fried Scorpion? Osaka Restaurant Serves Up Unusual Eats - Kotaku | evolution | Scoop.it
“Fried Scorpion? Osaka Restaurant Serves Up Unusual Eats Kotaku But, the most surprising kushiage the restaurant has are lightly battered kushi-crickets and kushi-scorpions.”
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Genetic mutation discovered that gives scorpions their sting - Examiner.com

Genetic mutation discovered that gives scorpions their sting - Examiner.com | evolution | Scoop.it
“Examiner.com Genetic mutation discovered that gives scorpions their sting Examiner.com Dr.”
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Compounds in scorpion venom could be used in painkillers (Aus)

Compounds in scorpion venom could be used in painkillers (Aus) | evolution | Scoop.it
Scientists have found unique compounds in the venom of Australian scorpions that have potential uses in pain management drugs.

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ReGenUC's curator insight, December 22, 2013 5:54 PM

Someone's going to go there, aren't they?

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How to Draw a Scorpion Tattoo, Step by Step, Tattoos, Pop Culture ...

How to Draw a Scorpion Tattoo, Step by Step, Tattoos, Pop Culture ... | evolution | Scoop.it
“I don't know how many people are going to enjoy this lesson, but I thought I would make it nonetheless. Here is "how to draw a scorpion tattoo", step by step. I have done a few scorpion tattoos in the past but with this one the ...”
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Smoking Mirrors | The Dance of the Scorpion and the Flight of the ...

Smoking Mirrors | The Dance of the Scorpion and the Flight of the ... | evolution | Scoop.it
“The Dance of the Scorpion and the Flight of the Eagle. Dog Poet Transmitting....... May your noses always be cold and wet. (Well, it looks like forces are in the wind to bring visible back to Maui in April.”
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Herbal and Home Remedies for Scorpion Stings | Herbal Remedies Info

Herbal and Home Remedies for Scorpion Stings | Herbal Remedies Info | evolution | Scoop.it
“Herbal Remedies: "Herbal and Home Remedies for Scorpion Stings" : http://t.co/eMsyYXbxGf #us #canada #uk #australia #california #texas”
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Don't mess with mum! Scorpion gives birth to 20 babies at World Museum - Liverpool Echo

Don't mess with mum! Scorpion gives birth to 20 babies at World Museum - Liverpool Echo | evolution | Scoop.it
“Liverpool Echo Don't mess with mum! Scorpion gives birth to 20 babies at World Museum Liverpool Echo You wouldn't want to upset mum if you were one of these babies recently born in the Bug House at Liverpool's World Museum.”
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Scorpion genome (Mesobuthus martensii) is fully sequenced and has 10,000 more genes than humans

Scorpion genome (Mesobuthus martensii) is fully sequenced and has 10,000 more genes than humans | evolution | Scoop.it

This may sting a little: Scorpions have about 10,000 more genes than humans do. The Chinese golden scorpion, Mesobuthus martensii, has at least 32,016 genes, Zhijian Cao of Wuhan University in China and colleagues report October 15 in Nature Communications. Humans have just over 22,000 genes. 


The researchers found 116 genes that encode neurotoxins, including 45 previously unknown ones. Many of the neurotoxins paralyze proteins in cell membranes that open and close to generate electrical signals, which nerve cells use to communicate. Mutations in the scorpion’s own membrane protein genes make the arachnid immune to its own venom.

 

Scorpions also have 160 enzymes that help them digest fats and detoxify plant chemicals from the herbivorous insects they eat. Some of these enzymes transform a chemical called coumarin into fluorescent compounds that make the animals glow blue under UV light, the team found.

 

The animals also make a type of light-sensing protein called Mmopsin3 in their tails. The protein senses ultraviolet to blue light. At least 20 other proteins made in the scorpion’s tail help transmit the light signal from the skin to the brain, the researchers discovered.

 

As the first complete scorpion genome and the second in Chelicerata, M. martensii is found to have the most protein-coding genes among sequenced arthropods. The M. martensii genome expands the genetic repertoire of arthropods into a previously unknown territory, which will aid further studies on the comparative genomics and evolution of arthropods. Considered a special type of arthropods, extant scorpions have preserved the primary features of Paleozoic ancestors from the Cambrian age. However, the Mesobuthus lineage is found to have a gene family turnover at a level significantly greater than the insects, challenging the common wisdom that scorpions apparently evolved more conservatively as ‘living fossils’. The data reveal the decoupling of the molecular and morphological evolution in scorpions, a phenomenon documented for the first time in an arthropod.


Underlying the molecular evolution of the M. martensii genome are the expansion of the gene families enriched in the basic metabolic pathways, signalling and stress response pathways, neurotoxins, and cytochrome P450 families of enzymes, and the different dynamics of expansion between the shared and the scorpion lineage-specific gene families. Genomic and transcriptomic analyses further illustrate the genetic features in M. martensii associated with the prey, nocturnal behaviour, feeding and detoxification, which are believed to be important to its long-term adaptation. These include the diversification of neurotoxins and their receptor genes, the expression of light-signal transduction genes enabling photosensor in the tail and the expansion of P450 families involved in detoxification and hormone biosynthesis. Taken together, these analyses on the scorpion genome reveal a unique adaptation model distinctive to other sequenced arthropods. The genomics study on M. martensii yields new insights into the evolution of arthropods, and raises some new questions as well, for example, the cause of the accelerating expansion of the scorpion lineage-specific gene families, and the general roles of the non-visual photosensor in the evolution of arthropods. This work builds a foundation for future exploration of these intriguing creatures, and also provides a valuable resource for addressing those fundamentally important questions.

 

Accession codes: The genome assembly has been deposited in GenBank under BioProject PRJNA171479. The genome and related annotation files are accessible at http://lifecenter.sgst.cn/main/en/scorpion.jsp.


Via Dr. Stefan Gruenwald
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