Isodisomy
Isodisomy
Isodisomy (pronunciation: /ˌaɪsoʊˈdɪsəmi/) is a type of uniparental disomy where two copies of a chromosome or part of a chromosome are inherited from one parent.
Etymology
The term is derived from the Greek words 'isos' meaning equal and 'dis' meaning twice, and 'soma' meaning body. It refers to the inheritance of two identical copies of a chromosome from one parent.
Definition
In isodisomy, an individual inherits two copies of a chromosome, or part of a chromosome, from one parent and none from the other. This can occur as a result of a mistake in meiosis, the process that produces eggs and sperm. Isodisomy can lead to a number of genetic disorders, depending on the specific chromosomes involved.
Related Terms
- Uniparental disomy: A situation in which both copies of a chromosome or part of a chromosome come from the same parent, instead of one copy coming from the mother and one from the father.
- Meiosis: The process by which the number of chromosomes is reduced by half to form sex cells – sperm and eggs.
- Chromosome: A thread-like structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.
Disorders Associated with Isodisomy
Isodisomy can lead to a number of genetic disorders, depending on the specific chromosomes involved. These include Prader-Willi syndrome, Angelman syndrome, and certain forms of cancer.
See Also
External links
- Medical encyclopedia article on Isodisomy
- Wikipedia's article - Isodisomy
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