In each species, methyl groups are added to DNA molecules during growing old, altering DNA activity without the need of altering the DNA itself. Therefore, DNA methylation is utilized by scientists to study aging in humans by means of an “epigenetic clock.” The epigenetic clock is often a biochemical examination, https://erickcmwfm.fare-blog.com/34019199/5-essential-elements-for-canine-age-chart