The phenomenon where there is a difference in the expression of the genes inherited from the father and the mother.

An epigenetic modification in the expression of a gene or genes which varies in its effect depending on whether the active allele is inherited from the mother or the father.

epigenetics, expression of imprinted genes is monoallelic and dependent upon the parents sex (parental imprinting), in contrast most genes (which are non-imprinted) have biallelic expression. This is an heritable change that does not alter DNA sequence. (More? Week 1 Notes)

Inactivation by methylation of a gene on one of a pair of homologous chromosomes.

Parent-specific expression or repression of genes or chromosomes in offspring.

Differing expression of genetic material dependent on the sex of the transmitting parent.

The variable phenotypic expression of a GENE depending on whether it is of paternal or maternal origin, which is a function of the DNA METHYLATION pattern. Imprinted regions are observed to be more methylated and less transcriptionally active. (Segen, Dictionary of Modern Medicine, 1992)

See imprinting

Epigenetic modifications of DNA or proteins surrounding DNA ( e.g. histones) that result in parent-specific expression or repression of genes in offspring.

Instances of genetic transmission in which the expression of a gene is determined by whether the particular allelic form has been inherited from the mother or the father.

An occurrence when the expression of a gene is affected by the parental origin.