Ocean channel in Bahamas marks genetic divide in Brazilian free-tailed bats
Fri, 18 Aug 2017 16:24:18 EDT
Brazilian free-tailed bats are expert flyers, capable of migrating hundreds of miles and regularly traveling more than 30 miles a night. But they pull up short at a narrow ocean channel that cuts across the Bahamas, dividing bat populations that last shared an ancestor hundreds of thousands of years ago.
Mechanisms explaining positional diversity of the hindlimb in tetrapod evolution
Fri, 18 Aug 2017 10:23:20 EDT
Elucidating how body parts in their earliest recognizable form are assembled in tetrapods during development is essential for understanding the nature of morphological evolution. Researchers found in eight tetrapod species that the position of the sacral vertebrae and the hindlimbs is determined by the initiation timing of Gdf11 gene expression. This will contribute to a forthcoming model explaining the coupling of spine and hindlimb positioning - a major step in fully understanding tetrapod evolution.
‘Euro Devil’: Fossil of carnivorous marsupial relative discovered in E Europe
Thu, 17 Aug 2017 09:31:22 EDT
Scientists have discovered fossil remains of a new carnivorous mammal in Turkey, one of the biggest marsupial relatives ever discovered in the northern hemisphere.
New genomic insights reveal a surprising two-way journey for apple on the Silk Road
Tue, 15 Aug 2017 09:50:41 EDT
New research reveals surprising insights into the genetic exchange along the Silk Road that brought us the modern apple.
Meadow of dancing brittle stars shows evolution at work
Mon, 14 Aug 2017 09:34:17 EDT
Newly-described fossil shows how brittle stars evolved in response to pressure from predators, and how an 'evolutionary hangover' managed to escape them.