What is the diagnosis of a 13-year-old female who has a karyotype that reveals an absent homologous X chromosome with only a single X chromosome present? Her features include a short stature,widely spaced nipples,reduced carrying angle at the elbow,and sparse body hair.

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Turner syndrome is characterized by short stature,female genitalia,webbed neck,shieldlike chest with underdeveloped breasts and widely spaced nipples,and imperfectly developed ovaries.
Down syndrome is characterized by distinctive characteristics: low nasal bridge,epicanthal folds,protruding tongue,and low-set ears.
Cri du chat syndrome is characterized by low birth weight,severe mental retardation,microcephaly (smaller than normal head size),and heart defects.
Klinefelter syndrome is characterized by small testes,some development of the breasts,sparse body hair,and long limbs.

What Is the Diagnosis of a 13-Year-Old Female Who Has