In Triturus newts, half of all offspring die. Scientists have long known that one part of their DNA—chromosome 1—exists in two different versions. Animals need both versions to survive. During ...

IN 1962 Buckley, Witkus and Berger1 reported that kinetin induced mitotic divisions throughout the digestive tract of the salamander, Triturus viridescens. It was also reported that these were diploid ...

Far from being an enthusiastic inhabitant of fire, as the ancients believed, the salamander must be moist, dies if it is even thoroughly dried out. Though no fire-eater, the lizard-like little ...

During experiments designed for a purpose remote from the subject of this communication, we had tried to remove from a young neurula of Triturus tæniatus the fore part of the presumptive area of the ...