Blood donor serosurveillance in eight of Brazil’s most populous cities reveals extensive variation of SARS-CoV-2 attack rate across cities, age, and sex groups in December 2020 and increased intrinsic severity of the Gamma variant of concern.

The sex-specificity of a transcription factor required for sexual differentiation of a neural circuit is regulated by a novel post-transcriptional mechanism.

Differing from its ortholog in Helicoverpa armigera, pheromone receptor HassOr14b is tuned to the major sex pheromone component in H. assulta, and two amino acids in the intracellular domain determine their ligand selectivity.

Regulatory hierarchies controlling sex determination and X-chromosome dosage compensation between closely-related nematode species are conserved, but X-chromosome target specificity for the condensin dosage compensation complex has diverged, thereby contributing to reproductive isolation.

Sexual differentiation controlled by sex-specific mRNA splicing evolved in a step-wise manner in insects.

snpc-1.3 specifies male piRNA transcription and is regulated by the sex determination pathway.

A single-cell RNA-seq study examining gene expression profiles in neurons that underlie Drosophila reproductive behaviors shows males and females build sex-specific behaviors at the molecular-genetic level by overlaying sex-specific information on core gene expression networks.

The timing of sexual differentiation in the brain of the nematode Caenorhabditis elegans is controlled by a phylogenetically conserved pathway of gene regulatory factors.

In the dioecious plant genus Leucadendron, shifts to sex-biased gene expression occurred predominantly in genes with ancestrally high rates of expression evolution, and were not correlated with morphology.

Blocking an atrophic 'master regulator' pathway following tendon tear does not affect resulting skeletal muscle atrophy.