The molecular isolation of imprinted genes allowed much more thorough experiments on the mechanisms that direct to their unique regulation. The very first three imprinted loci had been explained in the early 1990s and also have because been studied intensely: the genes encoding the insulin-like progress issue sort-two receptor (Igf2r, https://stephenvmzjn.yomoblog.com/35496400/pattern-imprint-an-overview