Nadia Halim | Dec 5, 1999 | 7 min read
Courtesy of Richard Roberts, New England BiolabsModel methylation reaction: Cytosine nucleotide (red) is flipped out of the DNA double helix by a methyltransferase (white), so it can be methylated. The end product after the methyl group has been transferred to the DNA is pictured in green. A tenuous link between DNA methylation and development has existed for several years. Now findings substantiate the connection. Researchers have found the first human diseases caused by defects in the DNA meth