... actually causes Down syndrome. Some professionals believe that hormonal abnormalities, X-rays, viral infections, immunologic problems, or genetic predisposition may be the cause of the improper cell division resulting in Down syndrome. It has been know for some time that the risk of having a child with ... additional chromosome causes an excessive amount of certain proteins to be formed in the cell. The particular proteins involved, and how they act, are not known. Many errors can occur during cell division. In meiosis, the pairs of chromosomes are supposed to split up and go to differen...

• Word Count: 2977
• Approx Pages: 12
• Has Bibliography
• Grade Level: High School

... by an error in cell division. Extra chromosomal material is present at conception either from the father's sperm or the mother's egg. Most errors are maternal and less than 5% are paternal. It is also believed to be related to the age of the mother although 80% of ... a Pediatric Cardiologist shortly after birth. As the child gets older more health concerns arise. Frequent ear infections and persistent fluid in the ear cause difficulties with hearing. Hearing tests are recommended starting at 6 months. Lazy eye and other vision problems are also common. Seven out of ... bite and/or a cros...

• Word Count: 2732
• Approx Pages: 11
• Has Bibliography
• Grade Level: High School