Tag: trisomy
Down Syndrome (Trisomy 21): A Comprehensive Overview
DefinitionDown syndrome (DS), or Trisomy 21, is a constitutional chromosomal disorder caused by the presence of an extra full or partial copy of chromosome 21. This additional genetic material disrupts typical embryonic and postnatal development, leading to a characteristic pattern of cognitive, physical, and medical features that vary widely in severity across individuals. Three cytogenetic…
