THE theories of Roux and Weismann concerning the significance of nuclear division have been the cause of much useful work. The attempt to decide experimentally whether the early divisions of a ...

A new study from the Smithsonian Tropical Research Institute (STRI) shows that red-eyed treefrog embryos hatch early when exposed to high ammonia levels — an environmental cue that it’s too hot and ...

A new study has revealed that male white-spotted bush frogs dedicatedly guard their fertilized eggs from other cannibalistic male frogs and predators. The study confirmed that the adult male ...

A new study that compared the effects of cold and warm temperatures on the development of frog eggs into larvae found that environmental temperature significantly changes how the nervous system ...

PITTSBURGH (Oct. 11, 2017) ... In roughly 48 hours, the single cell of the fertilized frog egg will undergo dramatic change to develop vital body parts like muscles, a skeleton, eyes, a heart, and a ...

Frothy mucus might not sound like the most inviting living space, but for some frogs' offspring it is a lifesaving refuge from drought. The amphibians often lay their gelatinous eggs in pools of water ...

Wood frogs are highly dependent on environmental conditions to determine whether they are active. After fattening up during ...

It had been five years since the first of the frog eggs had been moved, carefully plucked from Mexico's Baja Peninsula and transported by cooler to Southern California. Anny Peralta-Garcia was getting ...

When it comes to laying eggs, tree frogs have some unusual habits. Instead of always laying their eggs on tree branches where they usually live, they often lay their eggs on the ground. But why would ...