Depiction of an early stage embryo. nobeastsofierce Science / Alamy Stock Photo In human embryos, testes in males and ovaries in females begin to develop at around four weeks, with sex determination ...

The gonad arises as a bipotential organ primordium. Expression of the Y-linked gene, Sry, in the bipotential gonad leads to the differentiation of Sertoli cells, which orchestrate testis development.

In a new study published in Water Biology and Security, scientists from the Ocean University of China have constructed the first detailed cell map of the gonad in the hermaphroditic bay scallop ...

Early in fetal development, a mass of cells known as the bipotential gonad has the possibility of giving rise either to ovaries or testes, reproductive organs that contribute to many of the ...