Trisomy 21

{
  "id": "MLC-T-CHM-012305",
  "term": "Trisomy 21",
  "field": "Chemistry",
  "definition": "A genetic condition resulting from the presence of an extra copy of chromosome 21 in some or all cells, leading to a total of three copies instead of the usual two. This chromosomal abnormality, also known as Down syndrome, is characterized by a distinct set of physical features, intellectual disability, and an increased risk of certain health problems. Individuals with trisomy 21 exhibit a range of developmental milestones and cognitive abilities.",
  "synonyms": [
    "Down syndrome"
  ],
  "subject": "Chemistry and Human Health",
  "see_also": [
    "adulthood"
  ],
  "references": [
    "PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 815 (https://doi.org/10.1515/pac-2015-1202)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/trisomy-21/"
}