Browse our latest Evolutionary Biology articles

A new bacterium isolated from an underground stream shows a novel multicellularity by self-organizing its filamentous cells like a liquid crystal and accommodating daughter cells in a sequential manner, which would be a new extant model of prokaryotic multicellularity.

A new species of multicellular bacteria broadens our understanding of prokaryotic multicellularity and provides insight into how multicellular organisms arise.

In Drosophila, genomic CRISPR/Cas9 expression necessary for CRISPR-based gene drives harbors fitness costs presumably caused by off-target effects, which can be minimized by using a high-fidelity version of Cas9.

Phylogenetic evidence suggests that the majority of HIV infections occurring in the UNAIDS Fast-track city Amsterdam continue to have an Amsterdam resident as source, indicating that the majority of HIV infections in Amsterdam could be prevented through city-level interventions.

A large-scale experiment demonstrates sex differences in cooperation and competition that can explain group size variation in ostriches.

A large-scale phylogenetic inference of the ribonucleotide reductase family reveals a new distinct clade with implications on how nature adapted to environmental changes.

Experimental manipulations of social groups of ostriches show that the benefits of cooperative parental care for females, and the costs of sexual competition for males, lead to sex differences in optimal group sizes.

Mountain gorillas, who live in close-knit social groups with siblings and non-siblings of both sexes throughout their lives, show distinct behavioral biases towards maternal versus paternal kin.

A relative of the tur, wild goat species now endemic to the Caucasus, lived at least 14,000 years ago in southern Turkey.

Combining clinical and genetic data can improve the effectiveness of virus tracking with the aim of reducing the number of HIV cases by 2030.