During the early stages of local adaptation and speciation, genetic differences tend to accumulate at certain regions of the genome leading to the formation of genomic islands of divergence (GIDs). This pattern may be due to selection and/or difference in the rate of recombination. Here, we investigate the possible causes of GIDs in Drosophila yakuba mayottensis , and reconfirm using field collection its association with toxic...

Summary The diversity of bacterial thiopurine methyltransferases (bTPMT) among five natural Se‐methylating freshwaters was investigated by polymerase chain reaction (PCR) screenings and sequencings. DNA sequence analyses confirmed the cloned products’ identity and revealed a broad diversity of freshwater TPMTs. Neighbour‐joining (NJ) phylogenetic analyses combining these sequences, all GenBank entries closely related to these...