Chromosome and Gene Abnormalities

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• Overview of Chromosome and Gene Disorders
  • Chromosome Abnormalities
  • Gene Abnormalities
  • Testing for Chromosome and Gene Abnormalities
  • Prevention

• Down Syndrome (Trisomy 21)
  • Complications of Down syndrome
  • Symptoms
    • Physical development
    • Cognitive (intellectual) development
  • Diagnosis
  • Treatment
  • Prognosis
  • More Information

• Trisomy 18
  • Symptoms
    • Physical abnormalities
    • Internal abnormalities
  • Diagnosis
  • Treatment
  • Prognosis
  • More Information

• Trisomy 13
  • Symptoms
    • Physical abnormalities
    • Other abnormalities
  • Diagnosis
  • Treatment
  • Prognosis
  • More Information

• Overview of Chromosomal Deletion Syndromes

• Cri-du-Chat Syndrome
  • Symptoms
  • Diagnosis
  • Treatment

• Prader-Willi Syndrome
  • Symptoms
  • Diagnosis
  • Treatment

• Wolf-Hirschhorn Syndrome
  • Symptoms
  • Diagnosis
  • Treatment

• Overview of Sex Chromosome Abnormalities

• Fragile X Syndrome
  • Symptoms
  • Diagnosis
  • Treatment
  • More Information

• Klinefelter Syndrome
  • Symptoms
  • Diagnosis
  • Treatment

• Noonan Syndrome
  • Symptoms
  • Diagnosis
  • Treatment

• Trisomy X

• Turner Syndrome
  • Symptoms
    • Infants
    • Older children, adolescents, and women
  • Diagnosis
  • Treatment

• XYY Syndrome