Theory predicts that the evolution of polyphenic variation is facilitated where morphs are genetically uncoupled and free to evolve towards their phenotypic optima. However, the assumption that develo
Drive genes are genetic elements that manipulate the 50% ratio of Mendelian inheritance in their own favour, allowing them to rapidly propagate through populations. The action of drive genes is often
We performed an inter-species comparison of murine spermatogenesis using the inbred strains C57B6J, CAST/EiJ and CAROLI/EiJ to investigate the cell type-specific evolution of gene expression levels am