There are many different types of chromosome abnormalities that require clinical care by a physician or other healthcare professional. Listed in the directory below are some, for which we have provided a brief overview.
If you cannot find the information in which you are interested, please visit the Medical Genetics Online Resources page in this Web site for an Internet/World Wide Web address that may contain additional information on that topic.
Overview of Chromosome Abnormalities
Types of Chromosome Abnormalities
Numerical Abnormalities: Overview of Trisomies and Monosomies
Structural Abnormalities: Deletions (Cri du Chat) and Duplications (Pallister Killian)
How Chromosome Abnormalities Happen: Meiosis, Mitosis, Maternal Age, Environment
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