DNA replication in early embryos differs from previous assumptions, study shows

A new discovery by researchers at the RIKEN Center for Biosystems Dynamics (BDR) in Japan upends decades of assumptions regarding DNA replication. Led by Ichiro Hiratani and colleagues, the experiments published August 28 in Nature show that DNA replication in early embryos is different from what past research has taught, and includes a period of instability that is prone to chromosomal copying errors.