noun
- plural of trisomy; genetic conditions in which an individual has three copies of a particular chromosome instead of the normal two
Usage: medical; genetics
Examples
- Down syndrome is one of the most common trisomies affecting newborns.
- The genetic counselor explained that trisomies occur when chromosomes fail to separate properly during cell division.
- Prenatal screening can detect certain trisomies early in pregnancy.
- Most trisomies are incompatible with life, but some allow survival to birth.
- Advanced maternal age increases the risk of having a baby with certain trisomies.
- The laboratory confirmed the presence of multiple trisomies in the tissue sample.