Showing posts with label Eukaryotes. Show all posts
Showing posts with label Eukaryotes. Show all posts

Tuesday, August 1

New Clues on the Origins of Life




Research suggests that all complex life forms, including humans, plants, and animals, trace their roots to a common Asgard archaean ancestor. This discovery aids in understanding the evolutionary step from microbes to eukaryotes and reveals that the Asgard archaea, evolving over 2 billion years ago, appear to be the progenitors of eukaryotic organisms.


The mythological Norse god Thor hails from the celestial city of Asgard, and according to revolutionary research published in the scientific journal, Nature, he’s not the only Asgardian. 

This new research suggests that we humans — along with eagles, starfish, daisies, and every complex organism on Earth — are, in a sense, Asgardians.

The research team at The University of Texas at Austin, along with collaborators from different institutions, conducted a genomic analysis of several hundreds of microorganisms known as archaea. 

Their findings revealed that eukaryotes – complex life forms with nuclei in their cells, including all flora, fauna, insects, and fungi across the globe – can trace their origins back to a common Asgard archaean ancestor.

That means eukaryotes are, in the parlance of evolutionary biologists, a “well-nested clade” within Asgard archaea, similar to how birds are one of several groups within a larger group called dinosaurs, sharing a common ancestor. 

The team has found that all eukaryotes share a common ancestor among the Asgards.  READ MORE...