Dr Jeremy Jones and A.Prof Frank Gaillard et al.

Trisomies are chromosomal anomalies which usually occur due to non-disjunction. The vast majority of affected fetuses being spontaneously aborted, often very early during gestation. Only three are compatible with extra-uterine life (T13, T18, T21), and only one beyond early infancy (T21).

In order of frequency they are:

Individuals with other rare trisomies may survive beyond infancy only if they have mosaic forms.

See also

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Article information

rID: 2209
Synonyms or Alternate Spellings:
  • Trisomy

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