mosaicism /mo·sa·i·cism/ (mo-za´ĭ-sizm) in genetics, the presence in an individual of two or more cell lines that are karyotypically or genotypically distinct and are derived from a single zygote.
Mosaicism
mosaicism
mo·sa·i·cism (m -z   -sz  m)n. A condition in which tissues of genetically different types occur in the same organism. |
Mosaicism
A genetic condition resulting from a mutation, crossing over, or nondisjunction of chromosomes during cell division, causing a variation in the number of chromosomes in the cells.
Mentioned in: Patau Syndrome
mosaicism
[mōzā′isiz′əm]
Etymology: L, Musa, goddess of the arts
(in genetics) a condition in which an individual or an organism that develops from a single zygote has two or more cell populations that differ in genetic constitution. Most commonly seen in humans is a variation in the number of chromosomes in the cells, which may involve either a particular autosome, such as in Down syndrome, or the sex chromosomes, such as in Turner's syndrome and Kleinfelter's syndrome. See also mosaic, sex chromosome mosaic.
mosaicism
the presence in an individual animal of cells derived from the same zygote, but differing in chromosomal constitution.
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