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Evolution news

Mutated frog gene repels predators

Post-doctoral researcher Andrés Posso-Terranova and his former supervisor José Andrés have found evidence that a single gene called MC1R controls the deep black color on the skin of these poisonous frogs. The researchers ...

dateNov 15, 2017 in Evolution
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Digger wasps and their chemistry

The skin of insects is usually covered by water-repellent hydrocarbons which protect them against desiccation and pathogens. This protective layer is species-specific in the majority of cases, creating a chemically unique ...

dateNov 03, 2017 in Evolution
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Willingness to take risks—a personality trait

People differ in their willingness to take risks. An individual's propensity for risk taking can also vary across domains. However, there is new evidence showing that there is also a general factor of individual risk preference, ...

dateOct 30, 2017 in Evolution
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Water striders illustrate evolutionary processes

How do new species arise and diversify in nature? Natural selection offers an explanation, but the genetic and environmental conditions behind this mechanism are still poorly understood. A team led by Abderrahman Khila at ...

dateOct 19, 2017 in Evolution
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Why do we have large brains?

In recently published article from Proceedings of the Royal Society B, the relationship between brain size and behavioural ecology was found to be highly sensitive to small data changes, and widely championed hypotheses such ...

dateOct 18, 2017 in Evolution
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Trophy hunting is unlikely to affect evolution

In recent years, there has been growing controversy surrounding the evolutionary effects of trophy hunting in big game animals worldwide. An article published in the Journal of Wildlife Management explains why the removal ...

Dino-killing asteroid sped up bird evolution

Human activities could change the pace of evolution, similar to what occurred 66 million years ago when a giant asteroid wiped out the dinosaurs, leaving modern birds as their only descendants. That's one conclusion drawn ...

10,000 year-old DNA proves when fish colonized lakes

DNA molecules in lake sediment are few and hard bound to particles. This resulted in challenging analyses and required development of new methods, both for extracting sufficiently clean DNA and for the statistical analysis ...

American oaks share a common northern ancestor

If you had been in northern Canada 45 million years ago, you might have encountered the distant ancestor of all of the oaks in the Americas. That single species gave rise to 220 more and two distinct lineages—red oaks and ...

Scientists edit butterfly wing spots and stripes

An international research team working at the Smithsonian Tropical Research Institute in Panama knocked-out a single control gene in the DNA of seven different butterfly species. In the Sept. 18 Proceedings of the National ...

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