DNA methylation is a biochemical process involving adding a methyl group to the DNA molecule, typically at cytosine bases that precede a guanine, known as CpG sites.
Updated 1 year ago

Epigenetics - how gene expression is regulated by temporary switches, called epi-marks - appears to be a critical and overlooked factor contributing to the long-standing puzzle of why homosexuality occurs, researchers say
Updated 13 years ago
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