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image: Sharks May Have Evolved from Acanthodians

Sharks May Have Evolved from Acanthodians

By | March 14, 2017

Analysis of an ancient shark fossil provides the strongest evidence to date that modern sharks derive from a class of 400 million–year-old bony fish.

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image: Opinion: Birds of a Feather?

Opinion: Birds of a Feather?

By | March 10, 2017

Taking into account the interaction of nuclear and mitochondrial genes in birds holds the promise of more objectively defining what constitutes a species.

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“Buena vista” hypothesis suggests that changes in the sizes of eyes, rather than a shift from fins to limbs, led fish to transition to land more than 300 million years ago.  

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image: Protecting Patients from Genetic Discrimination

Protecting Patients from Genetic Discrimination

By | March 2, 2017

Despite laws meant to protect US citizens from insurance discrimination due to their DNA, some still fear such judgment, while others claim they have experienced it. 

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image: Human Gut Microbe Transplant Alters Mouse Behavior

Human Gut Microbe Transplant Alters Mouse Behavior

By | March 1, 2017

Fecal transplants from humans with irritable bowel syndrome and anxiety into mice lead to similar symptoms and anxiety-like behavior in the rodents, researchers report.  

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image: Understanding the Roots of Human Musicality

Understanding the Roots of Human Musicality

By | March 1, 2017

Researchers are using multiple methods to study the origins of humans’ capacity to process and produce music, and there’s no shortage of debate about the results.

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NASA researchers have discovered ancient microbes locked inside minerals, suggesting a possible niche for interstellar life.

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image: Ancient Marine Reptile Birthed Live Young

Ancient Marine Reptile Birthed Live Young

By | February 15, 2017

Researchers have described a pregnant Dinochephalosaurus, and the fossilized remains suggest that the massive animal did not lay eggs, as previously suspected.

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image: Duplicated Genes May Reduce Resilience in Yeast

Duplicated Genes May Reduce Resilience in Yeast

By | February 14, 2017

Researchers find that some duplicated yeast genes develop dependency—the loss of one copy leads to the failure of the other.

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Speciation and development of new traits may not always go hand-in-hand.

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