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image: Mitochondria’s Bacterial Origins Upended

Mitochondria’s Bacterial Origins Upended

By Shawna Williams | April 25, 2018

Contrary to some hypotheses, the organelles did not descend from any known lineage of Alphaproteobacteria, researchers find.

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The genomes of two species of water bears reveal clues about how they persist in extreme conditions, yet don’t resolve the animals’ debated evolutionary story.

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image: New Giant Virus Group Reported

New Giant Virus Group Reported

By Diana Kwon | April 6, 2017

A genomic analysis of “Klosneuviruses” suggests that they evolved from small viruses that accumulated genetic material over time, but not all virologists are convinced. 

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image: Dinosaur Phylogenetic Tree Shake-Up

Dinosaur Phylogenetic Tree Shake-Up

By Jef Akst | March 24, 2017

An analysis of 74 dinosaur species leads a group of researchers to reorganize the extinct animals’ evolutionary history.

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image: Ancient Origins of Retroviruses

Ancient Origins of Retroviruses

By Tracy Vence | January 12, 2017

Foamy-like endogenous retroviruses may have emerged more than 450 million years ago, according to an analysis.

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image: The Pangenome: Are Single Reference Genomes Dead?

The Pangenome: Are Single Reference Genomes Dead?

By Catherine Offord | December 1, 2016

Researchers are abandoning the concept of a list of genes sequenced from a single individual, instead aiming for a way to describe all the genetic variation within a species.

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image: Animal Microbiomes Are Unique and Beneficial to Their Hosts

Animal Microbiomes Are Unique and Beneficial to Their Hosts

By Ben Andrew Henry | November 29, 2016

Survey of 24 animal species suggests that each hosts a custom-tailored microbiome.

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image: Repositioning Ctenophores

Repositioning Ctenophores

By Karen Zusi | December 1, 2015

A reanalysis of phylogenetic data places sponges, rather than comb jellies, back at the base of the animal tree.

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image: Speaking of Science

Speaking of Science

By The Scientist Staff | November 1, 2015

November 2015's selection of notable quotes

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image: Tree of Life v1.0

Tree of Life v1.0

By Jef Akst | September 22, 2015

Researchers map 2.3 million species in a single phylogeny. 

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