DNA recording system reveals how a single cell becomes a body

Scientists have traced the development of a mouse embryo from its first two cells to the formation of organs, using a remarkable DNA recording system that reveals the family history of individual cells. Their findings uncover how different cell types emerge on their own schedules and could help explain what goes wrong in birth defects, genetic disorders, and cancer. DNA recording system reveals how a single cell becomes a body.

DNA recording system reveals how a single cell becomes a body Science News from research organizations DNA recording system reveals how a single cell becomes a body Scientists have recorded how a single fertilized egg becomes a complex body, uncovering hidden patterns of development that could shed light on birth defects and cancer. This technology taps into the genetic material in the fertilized egg and resulting embryonic cells as a recording device of the cells’ histories. It tracks their relationships as the embryo develops.

Using an innovative DNA recording technology, the researchers followed how those early cells multiplied, developed specialized roles, and eventually helped form a body with distinct organs and tissues. The recording covered the first 13.5 days of embryonic development, providing an unusually detailed look at how a complex mammalian body takes shape. (Full gestation in mice is 19 to 21 days.) The findings, published on October 8, 2026, in the journal Science, could help scientists better understand normal development and what happens when that process goes wrong.

"We are interested in tracking how cells’ early ancestry in an embryo influences their later fates.