Turner's Syndrome: Causes & Symptoms ||Class 12 Biology

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      Turner's syndrome is a sex chromosomal abnormality. It is caused due to the absence of one of the X chromosome i.e. 45 with XO in which a female is partly or completely missing an X chromosome.
       Turner's syndrome was named after Henry Turner, an endocrinologist who described it in 1938. Turner's syndrome occurs in between 1 in 2000.
      Affected females are sterile as ovaries are rudimentary, i.e. undeveloped. Lack of secondary sexual characters and poor breasts development. Short stature, small uterus, puffy fingers, webbed neck, swollen hands and feet are seen at birth.      
     Turner's syndrome is not usually inherited in families. The exact cause of Turner's syndrome is not known. It appears to occur as a result of a random error during the formation of either eggs or sperms.
      No cure for Turner's syndrome is known. Treatment may help with symptoms. Human Growth Hormone injections during childhood increase adult height. Estrogen replacement therapy can promote the development of the breasts and hips.


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