Co-evolution of sexually dimorphic reinforcement systems for song can explain the coexistence of the seemingly contradictory traits of gregariousness and monogamy in social songbirds.

Monosomy in yeast results in numerous gene dosage insufficiencies with potentially lethal collective effect, but strong positive epistasis rooted in the modular structure of cell metabolism cancels it.

Natural temperature variation across an optimal reproductive range for wild flies (Drosophila melanogaster) modulates the impact of sexual conflict on female fitness via asymmetric effects on pre- and post-copulatory male harm mechanisms.

A mathematical model predicts the precise conditions for natural selection to favor the evolution of non-reproductive workers in insect colonies with haplodiploid genetics.

Immature hematopoietic cells from mice with a large segmental deletion found in human myeloid malignancies exhibit cardinal features of myelodysplastic syndrome.

Prairie and meadow voles show striking sex and species differences in social motivation to access conspecifics of different types (familiar versus unfamiliar and same-sex versus opposite-sex).

A longer birdsong-learning window evolves in response to sexual selection for song complexity and is associated with faster evolution of song performance characteristics.

Comparative study provides evidence that males are under stronger total selection compared to females.

Monogamous rodents of the genus Peromyscus, upon disruption of pair bonds, acquire increased oncogenic activity.

A Y-chromosome shredding gene drive that depletes the pool of XY males and effects mate limitation could be a viable tool for vertebrate pest control.