Linked from

The 17 pages that link to Down syndrome, each with the reason it gives.

• MeiosisBroader topic: A meiotic chromosome-separation error can create the extra chromosome.

• ChromosomeBroader topic: It is a well-known example of a condition associated with chromosome-number variation.

• Prenatal diagnosisBroader topic: It is a common example of a condition assessed by prenatal screening and diagnostic testing.

• KaryotypeBroader topic: A karyotype can reveal the extra chromosome in many cases.

• AneuploidyBroader topic: It is a common viable example of autosomal aneuploidy.

• NondisjunctionBroader topic: Most cases result from chromosome 21 nondisjunction during gamete formation.

• Chromosome theory of inheritanceBroader topic: Trisomy 21 is a clear human example of inheritance altered by chromosome segregation.

• Homo floresiensisCompared with: A proposal that LB1 had this condition was tested against the wider fossil evidence.

• AmniocentesisBroader topic: Chromosome analysis of amniotic-fluid cells can diagnose this condition.

• Chromosomal translocationRelated: A familial translocation can transmit extra chromosome 21 material and cause this condition.

• HypotoniaRelated: Low tone is common in infancy and can affect feeding and motor development.

• Congenital cataractRelated: Congenital cataracts occur more often in children with this condition.

• Hirschsprung diseaseRelated: Hirschsprung disease occurs more often in people with Down syndrome than in the general population.

• Jérôme LejeuneRelated: Lejeune’s best-known scientific work identified its chromosomal cause.

• Chromosome abnormalityBroader topic: It is a well-known example of an autosomal chromosome-number abnormality.

• Congenital, Hereditary, and Neonatal Diseases and AbnormalitiesBroader topic: It is a congenital condition that commonly results from a chromosomal difference.

• DermatoglyphicsRelated: Certain palm and finger patterns occur more often in populations with this condition, but do not diagnose it.