Definitions for trisomy 21
This page provides all possible meanings and translations of the word trisomy 21
mongolism, mongolianism, Down's syndrome, Down syndrome, trisomy 21(noun)
a congenital disorder caused by having an extra 21st chromosome; results in a flat face and short stature and mental retardation
The presence of three copies of the 21st chromosome in the karyotype.
A chromosomal abnormality consisting of the presence of a third copy of chromosome 21 in somatic cells.
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