Normally, people have 46 chromosomes, which include 22 pairs of autosomes (the same for males and females) and two separate gender-determining chromosomes, the XX pair in females and the XY pair in males. Therefore, it is possible that the rates of MS may be lower in African American populations compared to Caucasian populations due to their genetic makeup being more similar to each other than Caucasians’.Ĭhromosomes are the structures that contain the genes you inherit from your parents. For example, the rate of MS is higher in African Americans than Caucasians. There are also differences among ethnic groups within countries. The prevalence of mosaic Down syndrome varies from country to country. However, it is estimated that there are between 1 in 1000 and 1 in 5000 people worldwide with mosaic Down syndrome. There is no exact number on how common mosaic Down syndrome is in the general population. People with mosaic Down syndrome are at increased risk for many diseases including heart disease, stroke, cancer and autoimmune disorders such as multiple sclerosis. Others with mosaic Down syndrome have only one copy of the gene, but they still carry some risk factors for developing MS. Some people with MS are carriers of two copies of the same gene, but they do not show any signs or symptoms. A person with mosaic Down syndrome (MS) may have one or several copies of certain genes while having no other symptoms. The term mosaic refers to a collection of different genetic variations.
0 kommentar(er)
