Down Syndrome Causes And Risk Factors
It’s not always clear why this anomaly occurs. In most cases, it’s a random occurrence at the time a sperm fertilizes an egg, although certain risk factors for Down syndrome have been identified, and there is one type of the disorder that can be inherited. Causes Trisomy for a specific chromosome, including for chromosome 21, is the result of a misdivision in the sperm or the egg prior to conception....