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For Ashley Zambelli, a surprise diagnosis allowed her to have an even more special bond with her children.. The Michigan-based mom, 23, recently found out she has Mosaic Down syndrome, a condition ...
Children with mosaic Down syndrome may have the same features as other children with Down syndrome. However, they may have fewer characteristics of the condition due to the presence of some (or many) cells with a typical number of chromosomes.
This is the cause of 1–2% of the observed Down syndromes. [4] There is evidence that mosaic Down syndrome may produce less developmental delay, on average, than full trisomy 21. [8] The following diagram shows two possible mechanisms leading to mosaic trisomy 21.
Mosaic Down syndrome: Only some cells in the person have an extra copy of chromosome 21. This genetic cause is considered rare. ... Already having one child with Down syndrome does increase the ...
Oct. 26—October is Down Syndrome Awareness month — a month to raise awareness and celebrate the many abilities of people with Down syndrome. "I think awareness and education for all ...
The average IQ of a young adult with Down syndrome is 50, equivalent to the mental age of an 8- or 9-year-old child, but this number varies widely. [3] At the same time, they enjoy a rich social and emotional awareness. [4] Down syndrome is the most common chromosome abnormality in humans, [3] occurring in about one per 1000 babies born each ...
46,XX/46,XY chimeric or mosaic is associated with a wide spectrum of different physical presentations, with cases ranging from having a completely normal male or female phenotype [7] [8] [9] to some cases having ovotesticular syndrome. Due to this variation, genetic testing is the only way to reliably make a diagnosis. [11] [12] [13] [6]
In honor of Down Syndrome Awareness Month, which happens every October, we rounded up some informative facts about the chromosomal condition.