Dictionary of Human Evolution and Biology

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Ambiguous Genitalia

Compromised sexual development due to a variety of causes, both environmental and genetic. Among the approximately forty genetic conditions that have ambiguous genitalia as a major feature are partial and/or complete androgen insensitivity syndrome, congenital adrenal hyperplasia (several varieties), male and/or female pseudohermaphroditism, and hermaphroditism (see hermaphrodite) Some researchers estimate the frequency at between 1 and 2% of all live births. Aka syndromes of abnormal sex differentiation.

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