Three companies have partnered to commercialise a Canadian-developed in-ovo egg sexing system capable of determining the sex of chick embryos as early as the fourth day of incubation, earlier than any ...

In a new analysis published in Trends in Genetics, we took a close look at these claims. We found they describe abnormal situations, such as hybrids between two species with different sex-determining ...

In humans and other animals, sex is usually determined by a single gene. However, there are claims that in some species, such as platyfish, it takes a whole “parliament” of genes acting together to ...