How is sex determined? Scientists say it's complicated / Gene discovery reveals unique sex determination in killifish / Genetic mechanism of alternating sexes in walnut trees has some parallels to sex determination in humans / Male or Female? AI enables sex determination of sheep based on their talus bone / Genetic code of the European green toad reveals a sex determination locus / Repeated co-option of HMG-box genes for sex determination in brown algae and animals | Science / Decoding the shared genetic toolkit for male sex determination / Researchers identify female sex determining gene in mice