evolutionary biology

Brown bear.

By sequencing four ancient cave bears and comparing them to other bear species, researchers retraced historical admixture of cave bears and brown bears.

Plasmodium vivax parasites that infect humans have highly similar genomes to parasites that infect apes, a finding with possible disease-eradication consequences.

The system, called EvolvR, can continuously diversify all nucleotides within a tunable window at user-defined loci using CRISPR-guided nickases.

Velociraptor mongoliensis

Using bioinformatic and molecular cytogenetic approaches, researchers retraced ancestral "diapsid" reptile genome patterns from extant bird and reptile genomes.

And Aren't Vulcan

A phylogenetic analysis of green-blooded lizards find the trait likely arose more than once, Reuters reports.

A multi-region analysis of colorectal cancers suggests samples from opposite sides of a tumor can help trace early, invasiveness-related tumor characteristics.

This Week in Science

In Science this week: new donkey genome assembly, visualization of the herpes simplex virus, and more.

Sequencing has helped clarify the baleen whale family tree, though the researchers tell the New York Times it's more of a phylogenetic network.

Using haplotype profiling, phylogenetics, and other analyses, researchers retraced sickle allele emergence to a single event occurring roughly 7,300 years ago.

Researchers discovered thousands of candidate functional elements by searching diverse mammalian genomes for regions of accelerated evolution within highly conserved sites.

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An Australian-led team has generated a draft genome assembly of the invasive cane toad in hopes it will help in population control, the Sydney Morning Herald reports.

The New York Times reports that the US Department of Defense has implemented about half the recommendations made to improve safe handling of dangerous agents.

In PLOS this week: approach for teasing out archaic introgression in human genomes, immune transcription features in HCV infection, and more.

Stat News reports that Maryland is promoting itself to the biotech industry with a mobile billboard.