Are there blue people in Sudan?
Answer
It would be theoretically possible for a person from any region to carry the recessive genetic disorder (caused by mutations in the CYB5R3 gene). The prevalence would be low in that region. The prevalence was high within the Appalachian community because of genetic isolation. As the Appalachian community is no longer isolated, the condition is not as prevalent now.
Updated on March 19, 2018
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