Mosaic
Mosaic (Medicine)
Mosaic (pronunciation: mo-zay-ik) is a term used in genetics and medicine to describe cells that are genetically different from each other in a single organism. This condition can occur as a result of various biological processes such as mutation, chromosomal crossover, and cell division.
Etymology
The term 'mosaic' is derived from the art form that uses small pieces of different colors to create a larger picture. In the context of genetics, it 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
- Chimera (genetics): A single organism composed of cells with more than one distinct genotype. In animals, this means an individual derived from two or more zygotes, which can include possessing blood cells from different blood types.
- Mutation: A permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people.
- Genotype: The genetic constitution of an individual organism.
- Phenotype: The set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.
- Cell Division: The process by which a parent cell divides into two or more daughter cells.
- Chromosomal Crossover: The exchange of genetic material between two homologous chromosomes non-sister chromatids that results in recombinant chromosomes during sexual reproduction.
See Also
References
External links
- Medical encyclopedia article on Mosaic
- Wikipedia's article - Mosaic
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