The exchange, reciprocal or nonreciprocal, of genetic material between one DNA molecule and a homologous region of DNA that occurs during mitotic cell cycles.

The process of transposing (moving to a different location) a segment of a chromosome or a piece of a DNA molecule.

Lateral transfer of an intron to a homologous allele that lacks the intron, mediated by a site-specific endonuclease encoded within the mobile intron.

Lateral transfer of a group II intron to a homologous allele that lacks the intron, mediated by a site-specific endonuclease encoded within the mobile intron; group II introns are self-splicing introns with a conserved secondary structure.

Lateral transfer of a group I intron to a homologous allele that lacks the intron, mediated by a site-specific endonuclease encoded within the mobile intron; group I introns are self-splicing introns that use guanosine as a cofactor in the splicing reaction.

The movement of any member of a Ty family of retrotransposons from one location to another in the genome.

Repression of transcription by conversion of large regions of DNA into an inaccessible state often called heterochromatin.

The initial formation of transcriptionally silent heterochromatin.

Processes leading to expression of genes that are typically not expressed due to silencing by regulatory proteins.

Repression of transcription of telomeric DNA by the formation of heterochromatin.

Heritable alterations in the activity of a gene that depend on whether it passed through the paternal or the maternal germline, but that are not encoded by DNA itself.

The formation or destruction of chromatin structures.

The process by which antigen-presenting cells express peptide antigen on their cell surface in a form recognizable by lymphocytes.

The aggregation and bonding together of a nucleosome, the beadlike structural units of eukaryotic chromatin composed of histones and DNA.

The process by which antigen-presenting cells express lipid antigen, via the CD1 protein, on their cell surface in a form recognizable by lymphocytes.