... occurs in men who have an extra X chromosome. The syndrome can affect different stages of physical, ...

... The cause is a missing or incomplete X chromosome. Girls who have it are short, and their ...

... missing altogether. These genes are on the X chromosome. You may have one or two X chromosomes: People who are born male have one X chromosome (from the mother) and one Y chromosome (from ...

... CML have a genetic change called the Philadelphia chromosome. It's called that because researchers in Philadelphia discovered it. People normally have 23 pairs of chromosomes in each cell. These chromosomes contain your DNA ( ...

... cell anemia is an example. Chromosomal disorders, where chromosomes (or parts of chromosomes) are missing or changed. Chromosomes are the structures that hold our genes. Down ...

... be missing. Chromosomal problems. In some cases, a chromosome or part of a chromosome might be missing. This is what happens in ... with Down syndrome, the child has an extra chromosome. Exposures to medicines, chemicals, or other toxic substances. ...

... many causes of developmental disabilities, including: Genetic or chromosome abnormalities. These cause conditions such as Down syndrome ...

Epilepsy is a brain disorder that causes people to have recurring seizures. The seizures happen when clusters of nerve cells, or neurons, in the brain send out ...

... also have a blood test to do a chromosome analysis. A chromosome is the part of a cell that contains ...

... testing. Genetic tests to look for gene and chromosome changes If you are diagnosed with ALL, you ...