Developmentally expressed genes play a fundamental role in the formation of a wide range of organs. The Y chromosome-located ...

Researchers from the University of Adelaide, in collaboration with the University of Melbourne, University of Queensland and ...

For decades, scientists have known that platypuses and echidnas – Australia’s unique egg-laying mammals – have another ...

Such testing has its critics and the Olympics have already tried it once only to abandon it in 1996. Read more at ...

Two X chromosomes mean girl, and an X paired with a Y means boy. For the last 300 million years, this system has worked very ...

The SRY gene is the blueprint for the SRY protein. The SRY protein triggers unformed tissues to become testes. If you don’t have the SRY protein, you develop ovaries instead.

In almost all mammals, male sex-determination occurs via the SRY gene on the male Y chromosome. Monotremes have evolved a totally different sex chromosome system that lacks the SRY gene.

"It's never been shown before that iron can flip such an important developmental switch." Earlier research established that ...