Imprinting, genomic
The phenomenon of parent-of-origin gene expression. The expression of a gene depends upon the parent who passed on the gene. For instance, two different disorders – Prader-Willi syndrome and Angelman syndrome — are due to deletion of the same part of chromosome 15. When the deletion involves the chromosome 15 that came from the father, the child has Prader-Willi syndrome, but when the deletion involves the chromosome 15 that came from the mother, the child has Angelman syndrome. Genomic imprinting plays a critical role in fetal growth and development. Imprinting is regulated by DNA methylation and chromatin structure.

Medical dictionary. 2011.

Look at other dictionaries:

  • Genomic imprinting — is a genetic phenomenon by which certain genes are expressed in a parent of origin specific manner. It is an inheritance process independent of the classical Mendelian inheritance. Imprinted genes are either expressed only from the allele… …   Wikipedia

  • genomic imprinting — genomic imprinting. parental imprinting (cм.). (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Imprinting — may mean: * Genomic imprinting, a mechanism of regulating gene expression * Imprinting (psychology), in psychology and ethology * Molecular imprinting, in polymer chemistry * Metabolic imprinting, the phenomenon by which the metabolism of the… …   Wikipedia

  • Genomic Imprinting — Genomische Prägung (engl. genomic imprinting) ist ein Vererbungsprinzip unabhängig von der klassischen mendelschen Vererbung (Gene, Allele): Gene, die dem Genomic Imprinting unterliegen (imprintete Gene), werden abhängig von ihrer elterlichen… …   Deutsch Wikipedia

  • Genomic imprinting — The phenomenon of parent of origin gene expression. The expression of a gene depends upon the parent who passed on the gene. For instance, two different disorders – Prader Willi syndrome and Angelman syndrome are due to deletion of the same part… …   Medical dictionary

  • Imprinting — Genomische Prägung (engl. genomic imprinting) bezeichnet das Phänomen, dass die Expression von Genen davon abhängen kann, von welchem Elternteil das Allel stammt. Dieses Vererbungsschema steht im Widerspruch zur klassischen mendelschen Vererbung …   Deutsch Wikipedia

  • imprinting — A particular kind of learning characterized by its occurrence in the first few hours of life, and which determines species recognition behavior. genomic i. epigenetic process that leads to inactivation of paternal or maternal allele of certain… …   Medical dictionary

  • genomic imprinting — Parent specific expression or repression of genes or chromosomes in offspring. There are an increasing number of recognized chromosomal imprinting events in pathological conditions: eg. preferential transmission of paternal or maternal… …   Dictionary of molecular biology

  • imprinting — See genomic imprinting …   Dictionary of molecular biology

  • genomic imprinting — noun see imprinting II …   Useful english dictionary

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