Other biologists, such as Bateson’s friend Erwin Baur of Berlin, were also uncovering anomalies—in Baur’s case, in snapdragons—caused by the failure of a single class of zygotes to survive. In other words, according to Castle, Mendel’s law was right, but the specifics of these mice or snapdragons led to a confusing anomaly. This explanation was soon confirmed by other investigators, who dissected the dead embryos of Cuénot’s strain of yellow mice and found that all were double dominants.
