Germline mosaicism
Germline Mosaicism
Germline mosaicism (pronounced: germ-line moh-zay-ih-sizm) is a condition that occurs when an individual has one or more mutated cells in their germ cells. This condition is not present in the individual's somatic cells, meaning it is not detectable through regular genetic testing.
Etymology
The term "germline mosaicism" is derived from the words "germ" and "mosaic". "Germ" refers to the germ cells, which are the cells that give rise to gametes (sperm and eggs). "Mosaic" refers to the presence of two or more populations of cells with different genotypes in one individual, who has developed from a single fertilized egg.
Related Terms
- Mutation: A change in the DNA sequence that makes up a gene.
- Germ cell: A type of cell that is a precursor to eggs in females and sperm in males.
- Somatic cell: Any cell of a living organism other than the reproductive cells.
- Genetic testing: A type of medical test that identifies changes in chromosomes, genes, or proteins.
- Gamete: A mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote.
- Genotype: The genetic constitution of an individual organism.
See Also
External links
- Medical encyclopedia article on Germline mosaicism
- Wikipedia's article - Germline mosaicism
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