Glossary of Genetic Terminology
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ULTRASOUND:
The use of sound waves for visualising body tissues and structures. In
pregnancy, structural abnormalities in the fetus can
be detected (see Genetics Fact Sheet 17A).
UNDIFFERENTIATED:
A cell that has not matured into a functional, specialised cell type.
UNIPARENTAL DISOMY:
Where both members of a chromosome pair are
contributed by one parent rather than one from each parent. Uniparental disomy
may be maternal or paternal.
UTERUS (WOMB):
The female sexual organ in which the fetus develops into a baby over a period
of nine months.