BioScience Dictionary

 
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Found Edward's Syndrome 1 time.

Displaying results 1 to 10.

1. Edward's Syndrome ( Edwards' syndrome, trisomy 18, trisomy E)
A congenital disorder caused by a baby having an extra copy of chromosome 18 (three instead of the normal two). Characteristics of the disorder include a large number of different malformed organs and malformed physical features of the face and skeletal structure. In most cases, the child dies before it is born; 90% of babies born live die within a year of birth. Symptoms may be less severe when the trisomy occurs after fertilization during mitosis in the zygote (10% of cases), than when the trisomy occurs during the meiosis which produced the egg or sperm (90% of cases).