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Down Syndrome

Down Syndrome. By: DeAna G. What is the Genetic cause of Down Syndrome?.

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Down Syndrome

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  1. Down Syndrome By: DeAna G

  2. What is the Genetic cause of Down Syndrome? • Down syndrome is named after John Langdon Down, who was the first to discover this disorder. The condition comes from having one extra chromosome. An error in cell division during the development of a fetus. The extra chromosome is also referred to as Trisomy 21. http://www.mentalhelp.net/poc/view_doc.php?type=doc&id=10332&cn=208

  3. Down Syndrome is common in both males and females but males get it more. Out of 203 children borne 130 males got down syndrome and only 28 females. It happens equally to all ethnic groups and something similar has been noted in chimpanzees and mice. Male vs. Female Is it more common in certain ethnic groups? http://answers.yahoo.com/question/index?qid=20080925102513AAu21jd

  4. In 1998 there were 65 babies born with Down syndrome in British Columbia. The overall incidence is 1 in 800 births. The risk is higher with increasing maternal age. Down syndrome is Autosomal and Recessive. How often does Down Syndrome occur? SEX vs. AUTOSOMAL, DOMINANT vs. RECESSIVE http://anthro.palomar.edu/abnormal/abnormal_4.htm http://www.scienceclarified.com/Ga-He/Genetic-Disorders.html

  5. Decreased muscle tone at birth Excessive skin at the nape of the neck Flattened nose Separated sutures (joints between the bones of the skull) Single crease in the palm of the hand Small ears Small mouth Upward slanting eyes Wide, short hands with short fingers White spots on the colored part of the eye (Brushfield spots) What are the symptoms of down syndrome? http://www.righthealth.com/topic/Symptoms_Of_Down'S_Syndrome/overview/fhealthocrates?fdid=healthocrates.xml_ 00922&section=Summary

  6. Can down syndrome be detected before birth? • Yes babies can be checked for down syndrome before birth by using a test called Amniocentesis. This test must be done within the 12th to the 18th week of pregnancy, and what this test does is looks at your chromosomes to see if there is any chromosomal abnormalities. http://archives.obs-us.com/obs/english/books/pg/pg228.htm

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