People with Down syndrome are at an increased risk of developing hypothyroidism. Down Syndrome affects all races. ... it is much less common. It is a genetic disorder for the baby; but not a sex-linked trait, thus it is not carried down from generation-to-generation, making it not overly prevelent in one race or another. Is ethnicity a factor in down syndrome ... Ds is one of the more common chromosome (c) ... reminded folks of the features of mongolian race. The incidence is higher in people with Down syndrome. Down's syndrome is usually caused by an extra chromosome in a baby's cells. What is Down syndrome? People with Down syndrome ... common chromosomal condition in the United States. In most cases, this isn't inherited it's simply the result of a one-off genetic change in the sperm or egg. Why are some genetic conditions more common in ... which have been passed down from common ancestors. This type of Down syndrome occurs in only one to two percent of all cases of Down syndrome. Researchers have found that it is more likely for an older mother to have reproductive cells with an extra copy of chromosome 21. Other causes include uniparental disomy, translocation, or single gene mutation in that region. tics of the syndrome, it was Down who described ... ing a second child with Down syndrome is about one in 100. Best Answer: i just had a miscarriage and found out it was a result of turner syndrome. Down Syndrome and Hypothyroidism. It happens throughout the world and is not specific to any one race, ... How common is Downs syndrome? Trisomy 18 is the second most common type of trisomy syndrome, after trisomy 21 (Down syndrome). ... Thyroid dysfunction are more common in children with Down Syndrome ... Down syndrome is one of the most common About 1 in every 5,000 babies is born with trisomy 18, and most are female. Genes and human disease Genes and chromosomal diseases Down Syndrome. See more about screening for Down's syndrome. Facts About Down Syndrome. Down Syndrome does not affect all races evenly its affects Mexicans more than any one else. Cancers of the blood are 10 to 15 times more common in children with Down syndrome. Marfan syndrome is passed down from your parents. Causes of Down's syndrome. im doing a report and i need to know if down syndrome is a very rare diseasse or a more common one ... race. Down syndrome is a common congenital condition affecting about one in every 700 babies in Canada. ... containing more information on Downs syndrome. One of every 700-900 ... people with Down syndrome look more like other people in Down syndrome is the most common chromosome disorder that we know of. In Victoria, between 45 and 60 babies will be born with Down syndrome each year. Down syndrome is the most common chromosome disorder and occurs in all races and cultures at around the same rate. It happens throughout the world and is not specific to any one race, ... How common is Downs syndrome? Down syndrome is the most common chromosome disorder that we know of. Hypothyroidism is a surprisingly common disorder that can affect people of all ages, and occurs in about 1 in 4,000 people. Down syndrome is a chromosomal condition that is associated with ... Why are some genetic conditions more common in particular ... Down's syndrome; Improved medical care is helping many more people with Down syndrome to live ... About Down syndrome. Down Syndrome Risk Factors. How many people are affected by or at risk for Down syndrome? The dr told me it is just a 'fluke'. People with Down syndrome have an extra chromosome 21 in their genetic make-up. Angelman syndrome is caused by the loss of the normal maternal contribution to a region of chromosome 15, most commonly by deletion of a segment of that chromosome. Birth Defects are Common, Costly, ... Down syndrome has become more common, ... about 93% of babies born with Down syndrome survived to one year of age. The condition is even more common than that, but many babies with trisomy 18 don't survive past the second or third trimester of pregnancy. You have a 50 percent of getting the disease if one ... syndrome.