Genomic imprinting is an epigenetic phenomenon by which certain genes can be expressed in a parent-of-origin-specific manner. It may also ensure transposable elements remain epigenetically silenced throughout gametogenic reprogramming to maintain genome integrity. It is an inheritance process independent of the classical Mendelian inheritance. In ...
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http://en.wikipedia.org/wiki/Genomic_imprinting
<genetics, molecular biology> Parent specific expression or repression of genes or chromosomes in offspring. There are an increasing number of recognised chromosomal imprinting events in pathological conditions: for example preferential transmission of paternal or maternal predisposition to diabetes or atopy, preferential retention of paterna...
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http://www.encyclo.co.uk/local/20973
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 predisposition to diabetes or atopy, preferential retention of paternal alleles in rhabdomyosarcoma, osteosarcoma, retinoblastoma and Wilms' tumour, preferential translocation to the paternal chromosome 9 of a portion of maternal chromosome 22 to form the Philadelphia chromosome of chronic myeloid leukaemia.
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http://www.encyclo.co.uk/visitor-contributions.php
Type: Term Definitions: 1. epigenetic process that leads to inactivation of paternal or maternal allele of certain genes susceptible to epigenetic regulation; accounts, among others, for the Angelman and Prader-Willi syndromes.
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http://www.medilexicon.com/medicaldictionary.php?t=43906
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 of chromosome 15. When the deletion involves the chromosome 15 that came from the...
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http://www.medterms.com/script/main/art.asp?articlekey=21053
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