Support WBURSome DNA Dismissed As 'Junk' Is Crucial To Embryo DevelopmentPlay03:55Download AudioRichard HarrisJune 21, 2018 ShareIn these two two-cell mouse embryos, the surface of the embryos is outlined in orange, the DNA in the nucleus is indicated in blue and the activity of the LINE-1 gene is indicated via bright red spots. (Ramalho-Santos lab/UCSF)
