Methylation of cytosines in DNA is important for the regulation of expression of many genes.
During carcinogenesis, normal patterns of gene methylation can be altered. Oxygen radical …

Endogenous plant genes or transgenes can be silenced on introduction of homologous
gene sequences. Here we document a reporter gene-silencing event in Nicotiana tabacum …

The mouse Xist gene is expressed exclusively from the inactive X chromosome and may
control the initiation of X tnactivatlon. We show that in somatic tissues the 5'end of the silent …

Previous work has shown that two homologous, unlinked transgene loci can interact in plant
nuclei, leading to non-reciprocal trans-inactivation and methylation of genes at one locus …

A considerable proportion of cytosine residues in plants are methylated at carbon 5.
According to a well‐accepted rule, cytosine methylation is confined to symmetrical …

Publisher Summary The evident specialization of maternal and paternal genomes in
mammals has been defined as genomic imprinting and is thought to arise during …

Genomic imprinting in mammals is thought to be mediated by differences in the methylation
level of cytosine residues in the genome. These differences in DNA methylation are thought …

Homology-dependent gene silencing, in which the presence of two or more totally or
partially homologous copies of a nuclear gene can lead to inactivation of at least one gene …

The liver tumor‐prone B6C3F1 mouse (C57BL/6♂× C3H/He♀), in conjunction with the
more susceptible C3H/He paternal strain and the resistant C57BL/6 maternal strain, is an …

Inactive-X-chromosome genes in mammalian females have methylated CpG islands. We
have questioned whether there are variable levels of cytosine methylation at different CpG …