IN the “concluding remarks” in his treatise on “Wahre Parthenogenesis” (1856), von Siebold says, “Es ist daher jetzt Aufgabe der Entomologen, nach weiteren Beispielen von Parthenogenesis in der ...

When we talk of “single parents,” we refer to a family that has only a mother (or sometimes only a father) raising the offspring. But there’s another way to be a single parent — when an individual ...