The most important, though obvious, reason is to help us better understand sex-linked genetic defects in men after birth.
ECONOMIST: Genetics
2.
This means they are less prone to sex-linked genetic defects.
ECONOMIST: Genetics
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The ultrasound and other technologies that identify the sex of a fetus started out as diagnostic devices to help people with sex-linked diseases, such as haemophilia, conceive healthy children.
ECONOMIST: Sex selection: Cat got your tongue? | The