An altered gene which causes male embryos to develop female genitalia, has been identified in humans. The discovery will lead to a faster and more accurate diagnosis of sex development disorders, says Andrew Sinclair at the Murdoch Children’s Research Institute, Australia. One in 4500 babies have gene mutations which mean their testes or ovaries do not develop properly in the womb. This can lead t
Bats and dolphins trod an identical genetic path to evolve a vital component of the complex sonar systems they use to pursue and catch prey. The finding is unusual, because although many creatures have independently evolved characteristics such as eyes, tusks or wings, they usually took diverse genetic routes to get there. Analysis of a specific gene has now demonstrated that although bats live in
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