Why frogs can't regenerate lost limbs like axolotls

In Lake Xochimilco of central Mexico dwells a rare salamander, the axolotl (Ambystoma mexicanum). In the wild, the axolotls do not metamorphose: adults very much resemble their larval counterparts and keep the external gills ...

Endocrine-disrupting pesticides impair frog reproduction

In a new study, researchers from Sweden and Britain have investigated how the endocrine-disrupting substance linuron affects reproduction in the West African clawed frog, Xenopus tropicalis. The scientists found that linuron, ...

Frogs reveal mechanism that determines viability of hybrids

Why are some hybrids viable and others not? It is known that this depends on the father species and the mother species. New research in two related frog species shows the influence of mother and father species: One hybrid ...

Gravity plays a role in keeping cells small

(Phys.org) —The effects of gravity are relevant when building houses or flying airplanes, but biologists have generally accepted that the average cell is too small for gravity to play a role in how it is built or behaves. ...

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