An investigation into a government cover-up leads to a network of abandoned train tunnels deep beneath the heart of Sydney.As a journalist and her crew hunt for the story it quickly becomes clear the story is hunting them.Some babies are born with a genetic variant that leads to atypical sexual development.It can result in the child being neither a typical boy nor girl.Emily and her mother have agreed to speak out to warn other girls of the dangers of being taken in by fake internet profiles, even when parents do everything in their power to protect their children from harm.For even Emily’s cautious parents were initially fooled.In an XX fetus, other genes become active to make an ovary in an embryo that will become a girl.Both cascades involve many genes in a network of checks and balances.
In contrast, Emily’s ‘boyfriend’ Matt — in reality a 16-year-old girl from Surrey — has never been charged, and this week was still to be found on certain internet networking sites, including Twitter, pretending to be a boy.
Estimates of this occurring range from one in 1500 or 2000 births, to 4 per cent of all births, depending on what definitions are used.
Whether surgery, hormone treatment or both are necessary, or whether they represent child abuse and it's better to do nothing, has stirred considerable debate.
Chromosomes and sex development Genetic differences between men and women lie in sex chromosomes.
Women have two X chromosomes and men have a single X (from their mother) and a male-specific Y (from their father).
Together, these two young girls forge a deep friendship based on their mutual needs.