"Unraveling Chemosensory Evolution in Diverse Fruit Flies"

A study on six ecologically diverse species of Drosophila explores the evolution of chemosensory tissues and cells. The research reveals that while most genes have changed in expression across multiple tissues, these changes occurred at different times in the past, suggesting independent evolutionary changes in gene regulation and cellular abundances. The study also highlights the low rates of divergence in sensory transcriptomes, with a few exceptions, and the cell-type specificity of gene expression changes across species. These findings provide valuable insights into the molecular basis of chemosensory evolution and its implications for understanding how nervous systems adapt to varying ecologies.