Mountain chickadees have remarkable memories. A new study explains why
ScienceDaily » Evolutionary Biology News
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13h ago
Mountain chickadees have among the best spatial memory in the animal kingdom. New research identifies the genes at play and offers insight into how a shifting climate may impact the evolution of this unique skill ..read more
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Genetic variant identified that shaped the human skull base
ScienceDaily » Evolutionary Biology News
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13h ago
Researchers have identified a variant in the gene TBX1 as key in the development of the unique morphology at the base of the skull. TBX1 is present at higher levels in humans than in closely related hominins. Low TBX1 also occurs in certain genetic conditions causing altered skull base morphology. This study provides a greater understanding of human disease and evolution ..read more
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Interspecies competition led to even more forms of ancient human -- defying evolutionary trends in vertebrates
ScienceDaily » Evolutionary Biology News
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13h ago
Competition between species played a major role in the rise and fall of hominins -- and produced a 'bizarre' evolutionary pattern for the Homo lineage -- according to a new study that revises the start and end dates for many of our early ancestors ..read more
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Seed ferns: Plants experimented with complex leaf vein networks 201 million years ago
ScienceDaily » Evolutionary Biology News
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13h ago
According to a research team led by palaeontologists, the net-like leaf veining typical for today's flowering plants developed much earlier than previously thought, but died out again several times. Using new methods, the fossilized plant Furcula granulifer was identified as such an early forerunner. The leaves of this seed fern species already exhibited the net-like veining in the late Triassic (around 201 million years ago ..read more
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Evolution's recipe book: How 'copy paste' errors cooked up the animal kingdom
ScienceDaily » Evolutionary Biology News
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3d ago
A series of whole genome and gene duplication events that go back hundreds of millions of years have laid the foundations for tissue-specific gene expression, according to a new study. The 'copy-paste' errors allowed animals to keep one copy of their genome or genes for fundamental functions, while the second copy could be used as raw material for evolutionary innovation. Events like these, at varying degrees of scale, occurred constantly throughout the bilaterian evolutionary tree and enabled traits and behaviours as diverse as insect flight, octopus camouflage and human cognition ..read more
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How seaweed became multicellular
ScienceDaily » Evolutionary Biology News
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5d ago
A deep dive into macroalgae genetics has uncovered the genetic underpinnings that enabled macroalgae, or 'seaweed,' to evolve multicellularity. Three lineages of macroalgae developed multicellularity independently and during very different time periods by acquiring genes that enable cell adhesion, extracellular matrix formation, and cell differentiation, researchers report. Surprisingly, many of these multicellular-enabling genes had viral origins. The study, which increased the total number of sequenced macroalgal genomes from 14 to 124, is the first to investigate macroalgal evolution throug ..read more
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Geobiology: New placozoan habitat discovered
ScienceDaily » Evolutionary Biology News
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5d ago
Traces of DNA in the stomachs of predatory snails give a team og geobiologists new insights into the ecology of placozoans ..read more
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3D mouth of an ancient jawless fish suggests they were filter-feeders, not scavengers or hunters
ScienceDaily » Evolutionary Biology News
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1w ago
Early jawless fish were likely to have used bony projections surrounding their mouths to modify the mouth's shape while they collected food. Experts have used CT scanning techniques to build up the first 3D pictures of these creatures, which are some of the earliest vertebrates (animals with backbones) in which the mouth is fossilized. Their aim was to answer questions about feeding in early vertebrates without jaws in the early Devonian epoch -- sometimes called the Age of Fishes -- around 400 million years ago ..read more
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The evolving attitudes of Gen X toward evolution
ScienceDaily » Evolutionary Biology News
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1w ago
As the centennial of the Scopes Monkey Trial of 1925 approaches, a new study illustrates that the attitudes of Americans in Generation X toward evolution shifted as they aged ..read more
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Birdfeeders are designed to keep unwanted guests away
ScienceDaily » Evolutionary Biology News
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1w ago
The first birdfeeders were made in the 19th century, and their design rapidly evolved during the 20th century. Researchers at the consider the evolution of the birdfeeder to be an example of multispecies design, where unwanted guests have shaped the human-made artifact ..read more
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