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Salamanders originate as metamorphosed with a biphasic lifestyle as shown by the palate shape and several non-shape features associated with the vomerine teeth, with diverse ecological types displayed in living species achieved in the Early Cretaceous.

Genome editing in a close unicellular relative of animals suggests a premetazoan function of the Hippo pathway effector YAP/TAZ/Yorkie in the regulation of cytoskeletal dynamics and multicellular morphogenesis but not proliferation.

Archived histological material from tracing studies, immunohistochemistry, and Golgi impregnations allowed to discover a so far unrecognized structural difference, potentially of functional importance, between neocortical pyramidal neurons of rodent, carnivore, and ungulate as compared to monkey and man.

Pyramidal neurons with axons that exit from dendrites rather than the cell body itself are relatively common in non-primates, but rare in monkeys and humans.

The midbrain periaqueductal grey is a conserved mediator of elaborate courtship behavior in a range of vertebrate taxa, likely shaping how this behavior diversifies across the tree of life.

Rat blood profiles support non-linear aging with distinct trajectory shifts, and these profiles could be used to predict non-overt illness in rats or aging intervention efficacy.

The first nuclear genomes of the Equus (Sussemionus) ovodovi enable us to reconstruct the speciation and extinction trajectory of this lineage.

Hybridization not only generates genetic diversity, but this diversity can alter the shape of the fitness landscape, changing which genotypic combinations are favored by natural selection and which accessible genotypic paths lead to novel fitness peaks.

African haplotypes of a meiotic drive supergene in Drosophila melanogaster called Segregation Distorter show signs of a recent selective sweep, reduced recombination, and increased genetic load.

Multimodal signals may evolve from unimodal one via co-option of primary signal components and associated cues that serve as by-products.